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| 阀门合金81Cu, 3Sn, 7Pb, 9Zn; 电子管金属; 阀用铅锡黄铜锡3%,铅7%,锌9%,其余铜 | |||
| 阀用铅锡黄铜 | |||
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valve metal : 8 phrases in 3 subjects |
| Automobiles | 4 |
| Compressors | 2 |
| Metallurgy | 2 |
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