 |
| |||
| echo radar | |||
| 回波雷达: 44 phrases in 9 subjects |
| Air defense | 11 |
| Aviation | 7 |
| Desert science | 1 |
| Earth sciences | 2 |
| Electronics | 6 |
| General | 2 |
| Remote sensing | 1 |
| Space | 8 |
| Technology | 6 |
|
| |||
| echo radar | |||
| 回波雷达: 44 phrases in 9 subjects |
| Air defense | 11 |
| Aviation | 7 |
| Desert science | 1 |
| Earth sciences | 2 |
| Electronics | 6 |
| General | 2 |
| Remote sensing | 1 |
| Space | 8 |
| Technology | 6 |