?中铅黄铜

... medium horse-power crawler tractor 中马力履带拖拉机 medium leaded brass 中铅黄铜 medium length fibre 中长纤维 ...

?中铅铜合金

... leaded bronze 含铅青铜,加铅青铜... medium leaded brass 中铅铜合金 leaded gun metal 加铅炮合金,含铅炮铜...