sheet metal gage

直角三角形_馆档网 ... "金属片,板金"," sheet metal" "金属片号规"," sheet metal gage" "板金机械"," sheet metal machinery" ...

美英加陆军规格_馆档网 ... "板金;金属片"," sheet metal" "板金号规"," sheet metal gage" "板金件"," sheet metal parts" ...