 |
| |||
| composite color signal; composite colour signal; composite picture signal | |||
| 复合彩色信号: 5 phrases in 3 subjects |
| Air defense | 1 |
| Electronics | 1 |
| Technology | 3 |
|
| |||
| composite color signal; composite colour signal; composite picture signal | |||
| 复合彩色信号: 5 phrases in 3 subjects |
| Air defense | 1 |
| Electronics | 1 |
| Technology | 3 |