 |
| |||
| conservative substance; persistent substance; recalcitrant substance; refractory substance | |||
|
sustancia persistente : 4 短语, 3 学科 |
| 化学 | 1 |
| 环境 | 2 |
| 联合国 | 1 |
|
| |||
| conservative substance; persistent substance; recalcitrant substance; refractory substance | |||
|
sustancia persistente : 4 短语, 3 学科 |
| 化学 | 1 |
| 环境 | 2 |
| 联合国 | 1 |