 |
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| 城市污水; 城市废水 | |||
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| 城市污水 (城市居住区中家庭的、商业的和工业活动产生的液体废物。) | |||
| urban wastewater: 8 phrases in 3 subjects |
| Ecology | 1 |
| Technology | 4 |
| Water resources | 3 |
|
| |||
| 城市污水; 城市废水 | |||
| |||
| 城市污水 (城市居住区中家庭的、商业的和工业活动产生的液体废物。) | |||
| urban wastewater: 8 phrases in 3 subjects |
| Ecology | 1 |
| Technology | 4 |
| Water resources | 3 |