 |
| |||
| 脉冲回波; 脉冲反射 | |||
| |||
| 回波脉冲 | |||
| 脉冲反射波 | |||
| pulse echo: 33 phrases in 13 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Business | 2 |
| Communications | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| General | 1 |
| Geophysics | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 6 |
| Space | 2 |
| Technology | 10 |
| Telecommunications | 4 |
|
| |||
| 脉冲回波; 脉冲反射 | |||
| |||
| 回波脉冲 | |||
| 脉冲反射波 | |||
| pulse echo: 33 phrases in 13 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Business | 2 |
| Communications | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| General | 1 |
| Geophysics | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 6 |
| Space | 2 |
| Technology | 10 |
| Telecommunications | 4 |