G-CuSn2ZnPb G-CuSn5ZnPb铜合金
G-CuZn37Pb G-C..
G-CuZn25A15 G-..
G-CuAl9Mn G-Cu..
G-CuPb20Sn Al-..
G-CuPb10Sn G-C..
G-CuPb5Sn G-Cu..