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静沉淀 : 25 phrases in 9 subjects |
| Ecology | 1 |
| Electric machinery | 1 |
| Electronics | 1 |
| Engineering geology | 2 |
| General | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Technology | 15 |
| Water resources | 1 |
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