bottom reflection
| echo
| bottom reflection | |
| met. | 底反射; 底面反射 |
| oil | 海底反射 |
| Echo | |
| space | 回声卫星 |
| echo | |
| gen. | 重复; 回响; 反射 |
| bridge. | 回声信号 |
| econ. | 反响; 响应 |
| hydroel.st. од. | 回声 |
| met. од. | 回波 |
| space | 回应 |
| |||
| 底反射; 底面反射 | |||
| 海底反射 | |||
| ★ 海底声反射 | |||
|
bottom reflection : 7 phrases in 4 subjects |
| Geophysics | 1 |
| Oil / petroleum | 2 |
| Space | 1 |
| Technology | 3 |