铸造，零件大小都没有观系。

Casting. No matter if the part is large or small.

youdao

精密的小零件，都是用马铁铸造而成的。

All these delicate small spare parts are cast from malleable iron.

youdao

精密的小零件，都是用马铁铸造而成的。

All these delicate small spare parts are cast from malleable iron.

youdao