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| 选择控制器 | |||
| 选择控制; 选线控制; 拨号控制 | |||
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selection controls : 14 phrases in 6 subjects |
| Aviation | 4 |
| China | 1 |
| Electronics | 3 |
| Information technology | 2 |
| Technology | 3 |
| Textile industry | 1 |
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