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irrigation with wastewater; sewage irrigation; wastewater irrigation |
污灌: 59 phrases in 11 subjects |
Agriculture | 5 |
Animal husbandry | 1 |
Architecture | 2 |
Desert science | 1 |
Ecology | 6 |
Engineering geology | 1 |
Hydroelectric power stations | 5 |
Metallurgy | 1 |
Technology | 35 |
Waste management | 1 |
Water resources | 1 |