紫铜带

铜带是制造各种电机、电器设备的绕组以及其他电工制品的不可缺少的导电材料。

copper plate press【印刷】;gravure press【印刷】;gravure printing machine【印刷】

copper oxide rectifier

copper oxide photovoltaic cell

cement copper

crude copper

copper 8-hydroxyquinolinate

copper electroplating on glass surface

copper strap wire