 |
| |||
| 调幅广播的地波 | |||
| ★ 地表波 | |||
| 地面电波 | |||
| ±也波 | |||
| 地震波 | |||
| 地波 | |||
| ★ 地波; 地面波; 地面波 | |||
| 直接辐射波; 地面电声波; 地面电光波; 地面电波; 地层波 | |||
| 地面电波 | |||
| |||
| 地面电波; 地波 | |||
|
ground wave : 28 phrases in 9 subjects |
| Air defense | 6 |
| Aviation | 2 |
| Electronics | 2 |
| Information technology | 2 |
| Metallurgy | 1 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Space | 6 |
| Technology | 7 |