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污水氧化
| 塘
| 污水氧化 | |
| tech. | sewage oxidation |
| 塘 | |
| gen. | pool |
| earth.sc. | cistern |
| environ. | pond |
| hydroel.st. | pool |
| met. | pond |
| tech. | facultative pond |
| |||
| sewage oxidation | |||
| 污水氧化: 20 phrases in 4 subjects |
| Environment | 3 |
| Space | 1 |
| Technology | 12 |
| Water resources | 4 |
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