| |||
| 指示电路 | |||
|
indicator circuit : 13 phrases in 6 subjects |
| Aviation | 1 |
| Chemistry | 1 |
| Electronics | 1 |
| Space | 1 |
| Technology | 8 |
| Telecommunications | 1 |
| |||
| 指示电路 | |||
|
indicator circuit : 13 phrases in 6 subjects |
| Aviation | 1 |
| Chemistry | 1 |
| Electronics | 1 |
| Space | 1 |
| Technology | 8 |
| Telecommunications | 1 |