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biological purification
| for
| atmospheric pollution
| biological purification | |
| hydroel.st. | 生物净化 |
| for | |
| gen. | 合; 为; 替; 给; 因为 |
| atmospheric pollution | |
| environ. | 大气污染 |
| |||
| 生物净化 | |||
| 生物净化 (作用); 生物净化 (法); 生物沉淀法 | |||
| biological purification: 24 phrases in 7 subjects |
| Desert science | 1 |
| Ecology | 3 |
| Environment | 1 |
| Genetics | 1 |
| Oil / petroleum | 1 |
| Technology | 13 |
| Water resources | 4 |
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