Electronic Flash
| Approach System
| electronic flash | |
| dermat. | 电子闪光灯 |
| approach system | |
| mil., air.def. | 进场系统 |
| physiol. | 趋向系统 |
| |||
| 电子闪光灯 | |||
| 电子闪光 | |||
|
Electronic Flash : 16 phrases in 5 subjects |
| Aviation | 3 |
| Electronics | 4 |
| Oil / petroleum | 1 |
| Technology | 6 |
| Television | 2 |