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| 金属材料 | |||
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metallic material : 22 phrases in 10 subjects |
| Architecture | 2 |
| Automobiles | 1 |
| Aviation | 1 |
| Chemistry | 2 |
| Computer numerical control | 1 |
| Electronics | 2 |
| General | 1 |
| Metallurgy | 6 |
| Space | 1 |
| Technology | 5 |
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