feeder foot sewing machine
...
feeder foot sewing machine 【feeder foot sewing machine】
Read Morefeeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
Another key feature is the adjustable stitch length, which provides versatility for different sewing projects. Operators can easily modify the stitch length, allowing for intricate designs or sturdy seams as needed. Additionally, many walking needle machines come equipped with various presser feet attachments, enabling users to create decorative stitches or tackle specific tasks such as quilting or binding.
feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
Furthermore, advancements in sewing technology have led to the development of innovative features such as on-screen monitoring and automated threading systems. These improvements not only enhance productivity but also reduce the risk of human error. With these machines, manufacturers can produce climbing ropes with greater consistency and within shorter time frames, meeting the growing demand from climbing enthusiasts and professionals alike.
feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
At the heart of the modern sewing machine lies the chain stitch mechanism. This technology uses a series of interlocking loops created by a needle and a looper. The chain stitch is distinctive due to its ability to create a durable seam that is both flexible and elastic. Unlike traditional lockstitches, which require two threads to form a cohesive seam, chain stitches use only one thread in a loop, significantly reducing the amount of material needed. This not only lowers costs but also accelerates the sewing process, enabling manufacturers to produce garments at a remarkable speed.
sewing machine chain

feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
Investing in a compound feed sewing machine can significantly enhance your sewing capabilities. Many reputable online and physical retailers offer a range of compound feed sewing machines for sale, catering to different needs and budgets. When searching for a compound feed sewing machine for sale, it’s important to choose a supplier that provides comprehensive product information and reliable after-sales support.Manufacturers and authorized dealers often provide detailed descriptions of their machines’ features and capabilities, helping you make an informed decision. Additionally, customer reviews and testimonials can offer valuable insights into the machine’s performance and durability. Some suppliers also offer financing options or leasing plans, making it easier to acquire high-quality machinery without a substantial upfront investment.
feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
Furthermore, these machines tend to have a relatively small footprint compared to multi-needle or heavy-duty sewing machines, making them ideal for smaller workshops and production facilities. Their user-friendly interface and automatic features also mean that operators can quickly learn to use them, thus reducing training time and increasing workforce productivity.
feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
Furthermore, manual machines are portable, making them an excellent choice for those who may work in small spaces or wish to take their work on the go. Unlike bulky electric machines that require a reliable power source, a manual sewing machine can be used virtually anywhere, whether in a workshop, at a craft fair, or even outdoors.
feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
Popular articles
A few brands are recognized for their reliability and efficiency in handling thick materials. Models like the Singer Heavy Duty series, Brother PQ1500SL, and Janome HD3000 are well-regarded for their performance with heavy fabrics. Research user reviews and feedback on these models to find the best fit for your specific needs.
In conclusion, the integration of CNC sewing machines in upholstery has been a game-changer. They bring about increased productivity, improved quality, greater customization, and the preservation of artisanal skills. As technology continues to evolve, we can expect even more advanced CNC machines that will further enhance the possibilities in the world of upholstery, making it an exciting time for both manufacturers and consumers alike.
Benefits of Using a Serger Machine
In addition to their versatility, our pattern sewing machines are also durable and reliable. With sturdy construction and high-quality components, you can trust that your machine will last for years to come. Say goodbye to frequent repairs and maintenance – our machines are built to withstand hours of use without compromising on performance

pattern sewing machine for sale.
Latest articles
-
In conclusion, the leather manual sewing machine serves as a cornerstone for many leather artisans, offering precision, control, and a sense of connection to the age-old craft of leatherworking. As makers continue to explore the parameters of their creativity, these machines provide the reliability and durability needed to produce high-quality leather goods. For anyone interested in delving into leather crafting, investing in a manual sewing machine is a decision that promises to enhance both skill and artistry, paving the way for countless creations. Whether it's the satisfaction of a well-stitched seam or the beauty of the finished product, the leather manual sewing machine remains an indispensable tool in the world of crafting.
-
Ideally, heavy duty sewing machines are heavier compared to regular home sewing machines. This is because they are made of iron or steel instead of plastic. The strong metal frame and robust exterior can withstand a lot of force and pressure. Thus, your machine is bound to last longer. Also, the machines come with a sturdy wooden table. As a result of their immobility and weight, a stable sewing environment is created.
-
Conclusion
-
Links
How to Use Silicone Self-Adhesive Tape?
- Yellow line marking tape, a seemingly simple tool, plays an integral role in various industries, from construction sites to warehouses, factories, and even in our everyday lives. This humble strip of tape is more than just a visual aid; it's a powerful communication tool that ensures safety, order, and efficiency.
TAPES & SEALANTS
CONTROL BOX DESIGN
As a result of the design process, a control panel must meet functional criteria, commercial parameters, and relevant legislation.Why is Butyl Sealant Tape Used?
- One of the primary uses of rubber splicing tape is in the splicing and repairing of electrical wires and cables. When wires are spliced together using this tape, the rubber material creates a strong and durable bond that protects the connection from moisture, corrosion, and other environmental factors. This helps to maintain the integrity of the electrical system and prevents dangerous shorts or malfunctions.
Operating temperature range from -20°C ~ 250°C
- In addition to its safety benefits, yellow and black floor tape is also an effective tool for organizational purposes

Electrical tape is a type of pressure-sensitive tape used to insulate electrical wires and other metal surfaces.
- In conclusion, the super strong waterproof flex tape is more than just a roll of adhesive; it's a testament to human ingenuity and our quest for practical solutions. It combines strength, flexibility, and water resistance into one convenient package, making it an indispensable tool for countless scenarios. So whether you're preparing for an emergency or simply looking to get more done around the house, keep a roll of this remarkable tape close at hand—you never know when you might need its powerful grip.
- Black insulation tape is widely used in various applications due to its excellent insulating properties and durability. Some common uses include
- In the household, grey PVC tape can be used for a wide range of applications. From repairing broken items to securing loose cables, this tape is an essential tool for any homeowner. Its strong adhesive properties ensure a secure bond, while its waterproof and chemical-resistant properties make it a durable and long-lasting solution for various household repairs.
- In conclusion, gray electrical tape is more than just a utilitarian roll of sticky backing; it's a vital component in the toolkit of any do-it-yourself enthusiast or professional electrician. Its reliability, versatility, and understated color make it an indispensable resource, proving that sometimes the most effective tools are those that blend into the background, working diligently without seeking fanfare.
- Hazard Floor Tape A Critical Safety Measure in Workplace Environments
- Thermal Protection
Butyl tape is perfect for areas in the home where leaks and corrosion occur because it is waterproof and highly adhesive. Use butyl tapes for roofing repairs, leaking pipes, ventilation systems, etc.
- Weatherstrip seals, often overlooked but incredibly essential, play a pivotal role in maintaining the comfort, energy efficiency, and overall functionality of homes and buildings. These simple strips of materials, typically made from rubber, foam, or metal, serve as a barrier against the elements, preventing unwanted intrusion of air, water, dust, and even noise.
- However, perhaps the most compelling aspect of the 50mm self-amalgamating tape is its accessibility. It is an affordable solution that does not compromise on quality. Its ease of use means that anyone, regardless of their expertise level, can achieve professional results. Whether you're a homeowner fixing a leak or a contractor working on a large-scale project, this tape promises a strong, reliable bond every time.
- The primary function of gymnasium floor tape is to establish clear demarcations. In a multi-purpose gym, where various sports and activities can take place, the floor needs to be reconfigured regularly. Floor tape quickly and effectively transforms the space, indicating basketball courts, volleyball courts, or workout zones. It helps prevent accidents by establishing a visual guide for athletes, reducing the chances of stepping out of bounds or colliding with obstacles.
- 4. 、,。
-
...
feeder foot sewing machine 【feeder foot sewing machine】
Read MoreAnother key feature is the adjustable stitch length, which provides versatility for different sewing projects. Operators can easily modify the stitch length, allowing for intricate designs or sturdy seams as needed. Additionally, many walking needle machines come equipped with various presser feet attachments, enabling users to create decorative stitches or tackle specific tasks such as quilting or binding.
feeder foot sewing machine
...
feeder foot sewing machine 【feeder foot sewing machine】
Read MoreFurthermore, advancements in sewing technology have led to the development of innovative features such as on-screen monitoring and automated threading systems. These improvements not only enhance productivity but also reduce the risk of human error. With these machines, manufacturers can produce climbing ropes with greater consistency and within shorter time frames, meeting the growing demand from climbing enthusiasts and professionals alike.
feeder foot sewing machine
...
feeder foot sewing machine 【feeder foot sewing machine】
Read Morefeeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
At the heart of the modern sewing machine lies the chain stitch mechanism. This technology uses a series of interlocking loops created by a needle and a looper. The chain stitch is distinctive due to its ability to create a durable seam that is both flexible and elastic. Unlike traditional lockstitches, which require two threads to form a cohesive seam, chain stitches use only one thread in a loop, significantly reducing the amount of material needed. This not only lowers costs but also accelerates the sewing process, enabling manufacturers to produce garments at a remarkable speed.
sewing machine chain

feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
Investing in a compound feed sewing machine can significantly enhance your sewing capabilities. Many reputable online and physical retailers offer a range of compound feed sewing machines for sale, catering to different needs and budgets. When searching for a compound feed sewing machine for sale, it’s important to choose a supplier that provides comprehensive product information and reliable after-sales support.Manufacturers and authorized dealers often provide detailed descriptions of their machines’ features and capabilities, helping you make an informed decision. Additionally, customer reviews and testimonials can offer valuable insights into the machine’s performance and durability. Some suppliers also offer financing options or leasing plans, making it easier to acquire high-quality machinery without a substantial upfront investment.
feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
Furthermore, these machines tend to have a relatively small footprint compared to multi-needle or heavy-duty sewing machines, making them ideal for smaller workshops and production facilities. Their user-friendly interface and automatic features also mean that operators can quickly learn to use them, thus reducing training time and increasing workforce productivity.
feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
Furthermore, manual machines are portable, making them an excellent choice for those who may work in small spaces or wish to take their work on the go. Unlike bulky electric machines that require a reliable power source, a manual sewing machine can be used virtually anywhere, whether in a workshop, at a craft fair, or even outdoors.
feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
Popular articles
A few brands are recognized for their reliability and efficiency in handling thick materials. Models like the Singer Heavy Duty series, Brother PQ1500SL, and Janome HD3000 are well-regarded for their performance with heavy fabrics. Research user reviews and feedback on these models to find the best fit for your specific needs.
In conclusion, the integration of CNC sewing machines in upholstery has been a game-changer. They bring about increased productivity, improved quality, greater customization, and the preservation of artisanal skills. As technology continues to evolve, we can expect even more advanced CNC machines that will further enhance the possibilities in the world of upholstery, making it an exciting time for both manufacturers and consumers alike.
Benefits of Using a Serger Machine
In addition to their versatility, our pattern sewing machines are also durable and reliable. With sturdy construction and high-quality components, you can trust that your machine will last for years to come. Say goodbye to frequent repairs and maintenance – our machines are built to withstand hours of use without compromising on performance

pattern sewing machine for sale.
Latest articles
-
In conclusion, the leather manual sewing machine serves as a cornerstone for many leather artisans, offering precision, control, and a sense of connection to the age-old craft of leatherworking. As makers continue to explore the parameters of their creativity, these machines provide the reliability and durability needed to produce high-quality leather goods. For anyone interested in delving into leather crafting, investing in a manual sewing machine is a decision that promises to enhance both skill and artistry, paving the way for countless creations. Whether it's the satisfaction of a well-stitched seam or the beauty of the finished product, the leather manual sewing machine remains an indispensable tool in the world of crafting.
-
Ideally, heavy duty sewing machines are heavier compared to regular home sewing machines. This is because they are made of iron or steel instead of plastic. The strong metal frame and robust exterior can withstand a lot of force and pressure. Thus, your machine is bound to last longer. Also, the machines come with a sturdy wooden table. As a result of their immobility and weight, a stable sewing environment is created.
-
Conclusion
-
Links
How to Use Silicone Self-Adhesive Tape?
- Yellow line marking tape, a seemingly simple tool, plays an integral role in various industries, from construction sites to warehouses, factories, and even in our everyday lives. This humble strip of tape is more than just a visual aid; it's a powerful communication tool that ensures safety, order, and efficiency.
TAPES & SEALANTS
CONTROL BOX DESIGN
As a result of the design process, a control panel must meet functional criteria, commercial parameters, and relevant legislation.Why is Butyl Sealant Tape Used?
- One of the primary uses of rubber splicing tape is in the splicing and repairing of electrical wires and cables. When wires are spliced together using this tape, the rubber material creates a strong and durable bond that protects the connection from moisture, corrosion, and other environmental factors. This helps to maintain the integrity of the electrical system and prevents dangerous shorts or malfunctions.
Operating temperature range from -20°C ~ 250°C
- In addition to its safety benefits, yellow and black floor tape is also an effective tool for organizational purposes

Electrical tape is a type of pressure-sensitive tape used to insulate electrical wires and other metal surfaces.
- In conclusion, the super strong waterproof flex tape is more than just a roll of adhesive; it's a testament to human ingenuity and our quest for practical solutions. It combines strength, flexibility, and water resistance into one convenient package, making it an indispensable tool for countless scenarios. So whether you're preparing for an emergency or simply looking to get more done around the house, keep a roll of this remarkable tape close at hand—you never know when you might need its powerful grip.
- Black insulation tape is widely used in various applications due to its excellent insulating properties and durability. Some common uses include
- In the household, grey PVC tape can be used for a wide range of applications. From repairing broken items to securing loose cables, this tape is an essential tool for any homeowner. Its strong adhesive properties ensure a secure bond, while its waterproof and chemical-resistant properties make it a durable and long-lasting solution for various household repairs.
- In conclusion, gray electrical tape is more than just a utilitarian roll of sticky backing; it's a vital component in the toolkit of any do-it-yourself enthusiast or professional electrician. Its reliability, versatility, and understated color make it an indispensable resource, proving that sometimes the most effective tools are those that blend into the background, working diligently without seeking fanfare.
- Hazard Floor Tape A Critical Safety Measure in Workplace Environments
- Thermal Protection
Butyl tape is perfect for areas in the home where leaks and corrosion occur because it is waterproof and highly adhesive. Use butyl tapes for roofing repairs, leaking pipes, ventilation systems, etc.
- Weatherstrip seals, often overlooked but incredibly essential, play a pivotal role in maintaining the comfort, energy efficiency, and overall functionality of homes and buildings. These simple strips of materials, typically made from rubber, foam, or metal, serve as a barrier against the elements, preventing unwanted intrusion of air, water, dust, and even noise.
- However, perhaps the most compelling aspect of the 50mm self-amalgamating tape is its accessibility. It is an affordable solution that does not compromise on quality. Its ease of use means that anyone, regardless of their expertise level, can achieve professional results. Whether you're a homeowner fixing a leak or a contractor working on a large-scale project, this tape promises a strong, reliable bond every time.
- The primary function of gymnasium floor tape is to establish clear demarcations. In a multi-purpose gym, where various sports and activities can take place, the floor needs to be reconfigured regularly. Floor tape quickly and effectively transforms the space, indicating basketball courts, volleyball courts, or workout zones. It helps prevent accidents by establishing a visual guide for athletes, reducing the chances of stepping out of bounds or colliding with obstacles.
- 4. 、,。
-
...
feeder foot sewing machine 【feeder foot sewing machine】
Read MoreAt the heart of the modern sewing machine lies the chain stitch mechanism. This technology uses a series of interlocking loops created by a needle and a looper. The chain stitch is distinctive due to its ability to create a durable seam that is both flexible and elastic. Unlike traditional lockstitches, which require two threads to form a cohesive seam, chain stitches use only one thread in a loop, significantly reducing the amount of material needed. This not only lowers costs but also accelerates the sewing process, enabling manufacturers to produce garments at a remarkable speed.
sewing machine chain

feeder foot sewing machine
...
feeder foot sewing machine 【feeder foot sewing machine】
Read Morefeeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
Investing in a compound feed sewing machine can significantly enhance your sewing capabilities. Many reputable online and physical retailers offer a range of compound feed sewing machines for sale, catering to different needs and budgets. When searching for a compound feed sewing machine for sale, it’s important to choose a supplier that provides comprehensive product information and reliable after-sales support.Manufacturers and authorized dealers often provide detailed descriptions of their machines’ features and capabilities, helping you make an informed decision. Additionally, customer reviews and testimonials can offer valuable insights into the machine’s performance and durability. Some suppliers also offer financing options or leasing plans, making it easier to acquire high-quality machinery without a substantial upfront investment.
feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
Furthermore, these machines tend to have a relatively small footprint compared to multi-needle or heavy-duty sewing machines, making them ideal for smaller workshops and production facilities. Their user-friendly interface and automatic features also mean that operators can quickly learn to use them, thus reducing training time and increasing workforce productivity.
feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
Furthermore, manual machines are portable, making them an excellent choice for those who may work in small spaces or wish to take their work on the go. Unlike bulky electric machines that require a reliable power source, a manual sewing machine can be used virtually anywhere, whether in a workshop, at a craft fair, or even outdoors.
feeder foot sewing machine
...
feeder foot sewing machine
【feeder foot sewing machine】
Read More
...
feeder foot sewing machine 【feeder foot sewing machine】
Read MoreInvesting in a compound feed sewing machine can significantly enhance your sewing capabilities. Many reputable online and physical retailers offer a range of compound feed sewing machines for sale, catering to different needs and budgets. When searching for a compound feed sewing machine for sale, it’s important to choose a supplier that provides comprehensive product information and reliable after-sales support.Manufacturers and authorized dealers often provide detailed descriptions of their machines’ features and capabilities, helping you make an informed decision. Additionally, customer reviews and testimonials can offer valuable insights into the machine’s performance and durability. Some suppliers also offer financing options or leasing plans, making it easier to acquire high-quality machinery without a substantial upfront investment.
feeder foot sewing machine
...
feeder foot sewing machine 【feeder foot sewing machine】
Read MoreFurthermore, these machines tend to have a relatively small footprint compared to multi-needle or heavy-duty sewing machines, making them ideal for smaller workshops and production facilities. Their user-friendly interface and automatic features also mean that operators can quickly learn to use them, thus reducing training time and increasing workforce productivity.
feeder foot sewing machine
...
feeder foot sewing machine 【feeder foot sewing machine】
Read MoreFurthermore, manual machines are portable, making them an excellent choice for those who may work in small spaces or wish to take their work on the go. Unlike bulky electric machines that require a reliable power source, a manual sewing machine can be used virtually anywhere, whether in a workshop, at a craft fair, or even outdoors.
feeder foot sewing machine
...
feeder foot sewing machine 【feeder foot sewing machine】
Read MorePopular articles
A few brands are recognized for their reliability and efficiency in handling thick materials. Models like the Singer Heavy Duty series, Brother PQ1500SL, and Janome HD3000 are well-regarded for their performance with heavy fabrics. Research user reviews and feedback on these models to find the best fit for your specific needs.
Benefits of Using a Serger Machine

pattern sewing machine for sale.
Latest articles
-
In conclusion, the leather manual sewing machine serves as a cornerstone for many leather artisans, offering precision, control, and a sense of connection to the age-old craft of leatherworking. As makers continue to explore the parameters of their creativity, these machines provide the reliability and durability needed to produce high-quality leather goods. For anyone interested in delving into leather crafting, investing in a manual sewing machine is a decision that promises to enhance both skill and artistry, paving the way for countless creations. Whether it's the satisfaction of a well-stitched seam or the beauty of the finished product, the leather manual sewing machine remains an indispensable tool in the world of crafting.
-
Ideally, heavy duty sewing machines are heavier compared to regular home sewing machines. This is because they are made of iron or steel instead of plastic. The strong metal frame and robust exterior can withstand a lot of force and pressure. Thus, your machine is bound to last longer. Also, the machines come with a sturdy wooden table. As a result of their immobility and weight, a stable sewing environment is created.
-
Conclusion
-
Links
How to Use Silicone Self-Adhesive Tape?
- Yellow line marking tape, a seemingly simple tool, plays an integral role in various industries, from construction sites to warehouses, factories, and even in our everyday lives. This humble strip of tape is more than just a visual aid; it's a powerful communication tool that ensures safety, order, and efficiency.
TAPES & SEALANTS
CONTROL BOX DESIGN
As a result of the design process, a control panel must meet functional criteria, commercial parameters, and relevant legislation.Why is Butyl Sealant Tape Used?
- One of the primary uses of rubber splicing tape is in the splicing and repairing of electrical wires and cables. When wires are spliced together using this tape, the rubber material creates a strong and durable bond that protects the connection from moisture, corrosion, and other environmental factors. This helps to maintain the integrity of the electrical system and prevents dangerous shorts or malfunctions.
Operating temperature range from -20°C ~ 250°C
- In addition to its safety benefits, yellow and black floor tape is also an effective tool for organizational purposes
Electrical tape is a type of pressure-sensitive tape used to insulate electrical wires and other metal surfaces.
- In conclusion, the super strong waterproof flex tape is more than just a roll of adhesive; it's a testament to human ingenuity and our quest for practical solutions. It combines strength, flexibility, and water resistance into one convenient package, making it an indispensable tool for countless scenarios. So whether you're preparing for an emergency or simply looking to get more done around the house, keep a roll of this remarkable tape close at hand—you never know when you might need its powerful grip.
- Black insulation tape is widely used in various applications due to its excellent insulating properties and durability. Some common uses include
- In the household, grey PVC tape can be used for a wide range of applications. From repairing broken items to securing loose cables, this tape is an essential tool for any homeowner. Its strong adhesive properties ensure a secure bond, while its waterproof and chemical-resistant properties make it a durable and long-lasting solution for various household repairs.
- In conclusion, gray electrical tape is more than just a utilitarian roll of sticky backing; it's a vital component in the toolkit of any do-it-yourself enthusiast or professional electrician. Its reliability, versatility, and understated color make it an indispensable resource, proving that sometimes the most effective tools are those that blend into the background, working diligently without seeking fanfare.
- Hazard Floor Tape A Critical Safety Measure in Workplace Environments
- Thermal Protection
Butyl tape is perfect for areas in the home where leaks and corrosion occur because it is waterproof and highly adhesive. Use butyl tapes for roofing repairs, leaking pipes, ventilation systems, etc.
- Weatherstrip seals, often overlooked but incredibly essential, play a pivotal role in maintaining the comfort, energy efficiency, and overall functionality of homes and buildings. These simple strips of materials, typically made from rubber, foam, or metal, serve as a barrier against the elements, preventing unwanted intrusion of air, water, dust, and even noise.
- However, perhaps the most compelling aspect of the 50mm self-amalgamating tape is its accessibility. It is an affordable solution that does not compromise on quality. Its ease of use means that anyone, regardless of their expertise level, can achieve professional results. Whether you're a homeowner fixing a leak or a contractor working on a large-scale project, this tape promises a strong, reliable bond every time.
- The primary function of gymnasium floor tape is to establish clear demarcations. In a multi-purpose gym, where various sports and activities can take place, the floor needs to be reconfigured regularly. Floor tape quickly and effectively transforms the space, indicating basketball courts, volleyball courts, or workout zones. It helps prevent accidents by establishing a visual guide for athletes, reducing the chances of stepping out of bounds or colliding with obstacles.
- 4. 、,。