radio echo
| method
| radio echo | |
| rem.sens. | 无线电回波 |
| method | |
| gen. | 法; 标准; 水平 |
| environ. | 方法 |
| hydroel.st. од. | 方法 |
| mech. | 电火花法 |
| |||
| 无线电回波 | |||
| 雷达反射 | |||
|
radio echo : 8 phrases in 5 subjects |
| Cryosphere | 1 |
| Electronics | 1 |
| Oil / petroleum | 1 |
| Space | 1 |
| Technology | 4 |