feedback-type
| proportioning controller
| feedback type | |
| tech. | 反馈型 |
| proportioning controller | |
| chem. | 配比控制器 |
| |||
| 反馈型 | |||
|
feedback-type : 13 phrases in 6 subjects |
| Air defense | 1 |
| Chemistry | 1 |
| Project management | 1 |
| Space | 1 |
| Technology | 8 |
| Telecommunications | 1 |