leaded manganese bronze铅锰青铜合金
leaded phosphor bronze含铅磷青铜
copper leaded nickel bronze铜铅镍青铜
leaded tin bronze加铅锡青铜;低铅锡青铜
co er leaded nickel bronze铜铅镍青铜
copper r leaded nickel bronze铜铅镍青铜
leaded d tin bronze加铅锡青铜
leaded nickel tin bronze加铅镍锡青铜;含铅镍锡青铜
Leaded-Tin Bronze Alloy铅锡青铜合金