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| 活塞铝合金 (4Cu； 0.5Mg;2Ni;余量 Al) | |||
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piston alloy : 11 phrases in 5 subjects |
| Automobiles | 1 |
| Compressors | 3 |
| Metallurgy | 4 |
| Steel production | 1 |
| Technology | 2 |
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