飞机钣金零件
aircraft sheet metal part
aircraft sheet metal parts
钣金件展开
unfolding sheet metal parts
铁基粉末冶金零件
Iron-base Powder Metallurgy Parts
Ferrous PM parts
ferrous powder metallurgy part
iron base powder metallurgical article
铜及铜合金零件
Copper and Copper Alloy Parts
调速器组件零件号
governor group part number