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容积系数 : 21 phrases in 9 subjects |
| Automobiles | 1 |
| Aviation | 1 |
| Business | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| Metallurgy | 10 |
| Refrigeration | 2 |
| Technology | 3 |
| Water resources | 1 |
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