| |||
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 |