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| river disposal Discharge of solid, liquid or gaseous waste into a river (排除河里的固体、液体和气体废物。) | |||
| 河 流处理: 5 phrases in 2 subjects |
| Technology | 3 |
| Water resources | 2 |
|
| |||
| river disposal Discharge of solid, liquid or gaseous waste into a river (排除河里的固体、液体和气体废物。) | |||
| 河 流处理: 5 phrases in 2 subjects |
| Technology | 3 |
| Water resources | 2 |