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往 复式 泵 : 38 phrases in 11 subjects |
| Automobiles | 1 |
| Chemistry | 1 |
| Drilling | 5 |
| Ecology | 1 |
| Electronics | 1 |
| Engineering geology | 2 |
| Hydroelectric power stations | 1 |
| Metallurgy | 2 |
| Nuclear and fusion power | 1 |
| Oil / petroleum | 2 |
| Technology | 21 |
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