seam doubling

例句：

1. 1. The seam doubling technique is used to reinforce the fabric.
   使用缝纫双倍技术来加固布料。
2. 2.The seam doubling method can significantly improve the durability of the product.
   缝纫双倍方法可以显著提高产品的使用寿命。
3. 3.During the sewing process, it's important to ensure proper seam doubling to prevent tears.
   在缝制过程中，确保正确的缝纫以预防撕裂是很重要的。