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| 无流体: 18 phrases in 9 subjects |
| Chemistry | 1 |
| Compressors | 1 |
| General | 1 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 2 |
| Space | 1 |
| Technology | 7 |
| Wind Energy | 2 |
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