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| 报警开关 | |||
| 报警信号开关; 报警器开关 | |||
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alarm switch : 17 phrases in 6 subjects |
| Aviation | 2 |
| Communications | 2 |
| Compressors | 1 |
| Electronics | 3 |
| Oil / petroleum | 2 |
| Technology | 7 |
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