 |
| |||
| acoustic depth finder; acoustical depth finder | |||
| echo sounder; sonic echo sounder | |||
| echo-sounder | |||
| sonic depth finder | |||
| 回声测探仪: 18 phrases in 11 subjects |
| Architecture | 1 |
| Construction | 1 |
| Electronics | 1 |
| Engineering geology | 2 |
| Exhibitions | 2 |
| Fishery fishing industry | 1 |
| General | 2 |
| Mining | 1 |
| Oil / petroleum | 2 |
| Shipbuilding | 1 |
| Technology | 4 |