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化(hua)學(xue)成(cheng)份 | |||||||||
Cu | Si | Fe | Mn | Mg | Zn | Cr | Ti | Pb.Bi | Al |
0.1 | 0.2~0.3 | 0.35 | 0.1 | 0.45~0.9 | 0.1 | 0.1 | 0.1 | / | 餘(yu)量(liang) |