writing pen ；manufacture by non-cutting metal working
金属光学
metal optics【材】;optics of metal【材】
暂无补充释义。
相关词条
heavy non-ferrous metal alloy【材】
metal plating
metal complex azo dyes
borides, carbides, nitrides, oxides, silicides as hard metal of more than 50% by weight
S7-metal
Zinc metal powder
metal scrap briquetting