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| close-open operations; CO operations; switching operation | |||
| switching operations | |||
| on-off operation; switching manipulation | |||
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开关操作 : 39 phrases in 11 subjects |
| Automobiles | 2 |
| Aviation | 4 |
| Electric machinery | 1 |
| Electronics | 7 |
| Information technology | 1 |
| Metallurgy | 1 |
| Project management | 1 |
| Rail transport | 2 |
| Shipbuilding | 2 |
| Technology | 16 |
| Thermal Energy | 2 |
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