| |||
| 背反射; 回射 | |||
| |||
| 背反射 | |||
| 背面反射; 背射 | |||
| 后反射; 背射法 | |||
|
back-reflection : 23 phrases in 7 subjects |
| Air defense | 1 |
| Chemistry | 1 |
| Electronics | 2 |
| Metallurgy | 12 |
| Oil / petroleum | 2 |
| Space | 2 |
| Technology | 3 |
| |||
| 背反射; 回射 | |||
| |||
| 背反射 | |||
| 背面反射; 背射 | |||
| 后反射; 背射法 | |||
|
back-reflection : 23 phrases in 7 subjects |
| Air defense | 1 |
| Chemistry | 1 |
| Electronics | 2 |
| Metallurgy | 12 |
| Oil / petroleum | 2 |
| Space | 2 |
| Technology | 3 |