| |||
| 微弱光信号 | |||
|
low-level light : 40 phrases in 11 subjects |
| Air defense | 1 |
| Automobiles | 1 |
| Aviation | 7 |
| Cartography | 1 |
| Electronics | 12 |
| General | 1 |
| Geophysics | 1 |
| Physics | 1 |
| Space | 8 |
| Technology | 6 |
| Television | 1 |
| |||
| 微弱光信号 | |||
|
low-level light : 40 phrases in 11 subjects |
| Air defense | 1 |
| Automobiles | 1 |
| Aviation | 7 |
| Cartography | 1 |
| Electronics | 12 |
| General | 1 |
| Geophysics | 1 |
| Physics | 1 |
| Space | 8 |
| Technology | 6 |
| Television | 1 |