 |
| |||
| depuration | |||
| decontamination | |||
| cleanup effect | |||
| purifying process | |||
| purification | |||
| cleaning action | |||
| clarification; clean-up effect | |||
|
净化作 用 : 19 phrases in 7 subjects |
| Chemistry | 1 |
| Ecology | 1 |
| General | 1 |
| Refrigeration | 1 |
| Technology | 11 |
| Ventilation | 1 |
| Water resources | 3 |
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