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| 重高密度合金 | |||
| 重合金; 钨基合金; 高密度合金; 重〔钨基，高密度〕合金 | |||
| 重合金 (重金属合金) | |||
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heavy alloy : 1 phrase in 1 subject |
| Metallurgy | 1 |
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