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| 遇险〔危急，呼救〕信号 | |||
| 呼救信号; 求救信号 | |||
| 海难信号; 遇险信号 | |||
| 遇难信号 | |||
| 遇难求教信号; 遇难求救信号 | |||
| 遇险呼救信号; 遇难 呼救信号 | |||
| 呼坡信号 | |||
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| 遇险信号 | |||
| distress signal: 29 phrases in 12 subjects |
| Air defense | 1 |
| Aviation | 2 |
| Construction | 1 |
| Economy | 1 |
| Electronics | 1 |
| International trade | 1 |
| Nautical | 1 |
| Navigation | 1 |
| Oil / petroleum | 1 |
| Space | 3 |
| Technology | 12 |
| Textile industry | 4 |
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