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无线电警戒
| 航标
| 无线电警戒 | |
| tech. | radio communication guard; radio detection; radio guard |
| 航标 | |
| bridg.constr. | channel marker; navigation aids |
| hydroel.st. | navigation mark |
| oil | navigational mark |
| space | aids to navigation |
| tech. | aids-to-navigation; channel mark |
| |||
| radio communication guard; radio detection; radio guard | |||
| 无线电警戒: 2 phrases in 2 subjects |
| Shipbuilding | 1 |
| Space | 1 |