| |||
| 污染指示物 | |||
| 污染指示器; 污染指示剂; 污染指标物 | |||
|
indicator of pollution : 11 phrases in 4 subjects |
| Ecology | 1 |
| Oceanography & oceanology | 1 |
| Technology | 7 |
| Water resources | 2 |
| |||
| 污染指示物 | |||
| 污染指示器; 污染指示剂; 污染指标物 | |||
|
indicator of pollution : 11 phrases in 4 subjects |
| Ecology | 1 |
| Oceanography & oceanology | 1 |
| Technology | 7 |
| Water resources | 2 |