焊补冲压模锻造模 工具钢等淬火硬化后模具材料的修补。

Progressive metal stamping mould forging weld-repair after quench hardened steel mold materials etc.

youdao

焊补冲压模锻造模 工具钢等淬火硬化后模具材料的修补。

Progressive metal stamping mould forging weld-repair after quench hardened steel mold materials etc.

youdao