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| 污泥沉降 | |||
| 淤泥沉降; 淤泥沉淀; 游泥沉淀; 污泥沉积; 污泥沉淀 | |||
| sludge settling: 11 phrases in 4 subjects |
| Ecology | 1 |
| Environment | 2 |
| Oil / petroleum | 2 |
| Technology | 6 |
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