| |||
| 总用氧量 | |||
| 总含氧量 | |||
| 总氧 | |||
|
total oxygen : 26 phrases in 9 subjects |
| Desert science | 1 |
| Earth sciences | 4 |
| Ecology | 1 |
| Electronics | 1 |
| General | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 1 |
| Technology | 11 |
| Water resources | 3 |
| |||
| 总用氧量 | |||
| 总含氧量 | |||
| 总氧 | |||
|
total oxygen : 26 phrases in 9 subjects |
| Desert science | 1 |
| Earth sciences | 4 |
| Ecology | 1 |
| Electronics | 1 |
| General | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 1 |
| Technology | 11 |
| Water resources | 3 |