切削工具的非金属本体，切削工具及其制造，使用方法。

Nonmetallic body of cutting tool, cutting tool and its mfg. and using method.

youdao

切削工具的非金属本体，切削工具及其制造，使用方法。

Nonmetallic body of cutting tool, cutting tool and its mfg. and using method.

youdao