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声波导航
| 测距
| 声波导航 | |
| tech. | sonar navigation; sonic navigation; sound homing |
| 测距 | |
| bridg.constr. | surveying distance |
| eng.geol. | distance finding |
| hydroel.st. | ranging |
| met. | distance measurement |
| rem.sens. | range finding |
| |||
| sonar navigation; sonic navigation; sound homing | |||
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声波导航 : 9 phrases in 7 subjects |
| Automobiles | 1 |
| Earth sciences | 1 |
| General | 3 |
| Navigation | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Telecommunications | 1 |
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