primary shear plane

例句：

1. 1.The primary shear plane is where the material is being deformed by the cutting tool.
   主剪切面是材料被切割工具变形的地方。
2. 2.In metalworking, understanding the primary shear plane is crucial for accurate cutting.
   在金属加工中，理解主剪切面对于精确切割至关重要。
3. 3. During the manufacturing process, the primary shear plane plays a significant role in shaping the final product.
   在制造过程中，主剪切面在塑造最终产品方面起着重要作用。