 |
| |||
| digital optical recording | |||
| 数字光记录: 7 phrases in 5 subjects |
| Aviation | 1 |
| Data processing | 1 |
| Electronics | 3 |
| Missiles | 1 |
| Telecommunications | 1 |
|
| |||
| digital optical recording | |||
| 数字光记录: 7 phrases in 5 subjects |
| Aviation | 1 |
| Data processing | 1 |
| Electronics | 3 |
| Missiles | 1 |
| Telecommunications | 1 |