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| unattended operation | |||
| unmanned operation | |||
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无 人 操作 : 18 phrases in 11 subjects |
| Aviation | 1 |
| Electronics | 4 |
| General | 2 |
| Information technology | 2 |
| Multimedia | 1 |
| Nautical | 1 |
| Navigation | 1 |
| Oil / petroleum | 2 |
| Space | 1 |
| Technology | 2 |
| Textile industry | 1 |
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