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| pollution measurement The assessment of the concentration of pollutants for a given time in a given point (在特定点和特定时间对污染物的集中评估。) | |||
| pollution measurement | |||
| 污染测量: 24 phrases in 12 subjects |
| Aviation | 1 |
| Earth sciences | 1 |
| Ecology | 2 |
| Economy | 1 |
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| Space | 5 |
| Technology | 6 |