open circuit spinning

例句：

1. 1. The open-circuit spinning process is crucial for the production of high-quality yarn.
   开环旋转纺纱过程对于生产高质量纱线至关重要。
2. 2. In open-circuit spinning, the fibers are spun directly into the yarn without being subjected to heat or chemicals.
   在开环旋转纺纱中，纤维直接被纺入纱线，而不经过加热或化学物质的处理。
3. 3. The open-circuit spinning method has been shown to improve the strength and durability of the final product.
   开环旋转纺纱方法已被证明可以提高最终产品的强度和耐用性。