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| production waste | |||
| production -waste | |||
| production wastewater | |||
| sewage from industry | |||
| polluted industrial wastewater; production sewage | |||
| 生产污水: 11 phrases in 6 subjects |
| Chemistry | 1 |
| Ecology | 2 |
| Metallurgy | 1 |
| Rail transport | 1 |
| Technology | 4 |
| Water resources | 2 |
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