| |||
| 声呐作用距离 | |||
|
sonar range : 17 phrases in 7 subjects |
| Air defense | 5 |
| Aviation | 1 |
| Earth sciences | 2 |
| Navigation | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 6 |
| |||
| 声呐作用距离 | |||
|
sonar range : 17 phrases in 7 subjects |
| Air defense | 5 |
| Aviation | 1 |
| Earth sciences | 2 |
| Navigation | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 6 |