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| 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 |
| variables | |
| econ. | 可变的 |
| exhib. | 因素 |
| math. | 变量; 变数 |
| oil | 可变量 |
| qual.cont. | 计量值 |
|
control variables : 4 phrases in 4 subjects |
| Business | 1 |
| Project management | 1 |
| Scientific | 1 |
| Space | 1 |