pulse-echo
| method
| pulse echo | |
| tech. | 脉冲回波; 脉冲反射 |
| pulse-echo | |
| avia. | 回波脉冲 |
| method | |
| gen. | 法; 标准; 水平 |
| environ. | 方法 |
| hydroel.st. од. | 方法 |
| mech. | 电火花法 |
| |||
| 脉冲回波; 脉冲反射 | |||
| |||
| 回波脉冲 | |||
| 脉冲反射波 | |||
|
pulse-echo : 35 phrases in 15 subjects |
| Air defense | 1 |
| Aviation | 1 |
| Business | 2 |
| Chemistry | 1 |
| Communications | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| General | 1 |
| Geophysics | 1 |
| Metallurgy | 2 |
| Mining | 1 |
| Oil / petroleum | 6 |
| Space | 2 |
| Technology | 10 |
| Telecommunications | 4 |