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| 钥匙琴键开关 | |||
| 钥匙按键开关 | |||
| 键式开关 | |||
| 按键开关 | |||
| 钥匙开关; 键式开关; 电键开关 | |||
| key switch: 35 phrases in 12 subjects |
| Architecture | 1 |
| Automobiles | 8 |
| Electric machinery | 2 |
| Electronics | 2 |
| Nuclear and fusion power | 1 |
| Oil / petroleum | 1 |
| Rail transport | 6 |
| Shipbuilding | 1 |
| Space | 2 |
| Technology | 8 |
| Telecommunications | 1 |
| Transport | 2 |
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