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| total oxygen | |
| construct. | 总用氧量 |
| met. | 总含氧量 |
| control | |
| hydroel.st. | 调节 |
| hydroel.st. од. | 控制 |
| IMF. | 管制 |
| manag. | 管理、管制; 核对; 存根 |
| met. | 调整; 操纵; 控制装置 |
| pest.contr. | 防治 |
| |||
| 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 |