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加 压间 : 23 phrases in 12 subjects |
| Aviation | 1 |
| Chemistry | 2 |
| Construction | 1 |
| Electric machinery | 1 |
| Metallurgy | 6 |
| Mining | 1 |
| Nursing | 1 |
| Plastics | 3 |
| Space | 1 |
| Technology | 4 |
| Water resources | 1 |
| Wood processing | 1 |
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