 |
机械定时
| 继电器
| 机械定时 | |
| tech. | mechanical timer |
| 继电器 | |
| dril. | pickup; repeater |
| el.mach. | relay |
| hydroel.st. | relay |
| met. | undercurrent relay |
| oil | electric relay |
| steel. | relay unit |
| |||
| mechanical timer (器) | |||
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机械定时 : 10 phrases in 9 subjects |
| Aviation | 1 |
| Electronics | 2 |
| General | 1 |
| Geophysics | 1 |
| Oil / petroleum | 1 |
| Oil processing plants | 1 |
| Project management | 1 |
| Space | 1 |
| Telecommunications | 1 |
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