That saves a lot of grinding and a lot of tool lost to dust.

这节省了研磨的工具，失去了很多很多的灰尘。

youdao

They can automatically remove dust and recover grinding sand and so on.

结构有自动除尘、自动回收磨砂等特点。

youdao

They can automatically remove dust and recover grinding sand and so on.

结构有自动除尘、自动回收磨砂等特点。

youdao