英语语法分析

Cutting tools must be reground at the first sign of dullness.

切削刀具一开始变钝就须重新打磨。

On the basis of this, an idea of revising and optimizing the reground side rake is raised.

在此基础上又进一步提出了重磨前角的修正和优化。

Minimum scrap loss. Runners, gates, and scrap can usually be reground. Recycled thermoplastics can be injection molded.

废料损失最小化：浇道、闸道和废料通常可以重新研磨。循环热塑性塑料可以注塑成型。