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| 开关 电路: 63 phrases in 17 subjects |
| Agriculture | 1 |
| Automobiles | 4 |
| Aviation | 3 |
| Construction | 1 |
| Electric machinery | 1 |
| Electricity | 1 |
| Electronics | 18 |
| Geophysics | 1 |
| Information technology | 2 |
| Lighting other than cinema | 1 |
| Radio | 1 |
| Rail transport | 2 |
| Shipbuilding | 3 |
| Space | 2 |
| Technology | 19 |
| Telecommunications | 1 |
| Wind Energy | 2 |
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