copperingn.铜包皮
coppern.铜;铜币;警察;紫铜色;有紫铜色翅膀的小蝴蝶vt.镀铜
copper base firction material铜基合金摩擦材料
Copper Retreat Into The Light光进铜退
Copper pipe with aluminum fin铜管串翅片
copper-strip ping autoclave脱铜高压釜
copper base friction material铜基合金摩擦材料
copper-graphite composition铜-石墨制品
copper strip corrosion tester铜条腐蚀测试仪
copper insoluble metal powder不溶于铜的金属粉末