 |
| |||
| 光学追踪设备 | |||
| 光学跟踪系统 | |||
| optical tracking system: 23 phrases in 8 subjects |
| Air defense | 1 |
| Aviation | 3 |
| Earth sciences | 1 |
| Electronics | 6 |
| Missiles | 1 |
| Space | 9 |
| Technology | 1 |
| United States | 1 |
|
| |||
| 光学追踪设备 | |||
| 光学跟踪系统 | |||
| optical tracking system: 23 phrases in 8 subjects |
| Air defense | 1 |
| Aviation | 3 |
| Earth sciences | 1 |
| Electronics | 6 |
| Missiles | 1 |
| Space | 9 |
| Technology | 1 |
| United States | 1 |