preshearing

例句：

1. 1. The machine is designed to perform preshearing operations before cutting the material.
   这台机器设计用来在切割材料之前进行预剪切操作。
2. 2.In this process, the preshearing stage is crucial for achieving optimal results.
   在这一过程中，预剪切阶段对于获得最佳结果至关重要。
3. 3.Preshearing techniques have been developed to improve the efficiency of the cutting process.
   已经开发了预剪切技术来提高切割过程的效率。