| |||
| 中继装置; 继电器组 | |||
| 继电器 | |||
|
relay unit : 20 phrases in 9 subjects |
| Aviation | 5 |
| Communications | 1 |
| Computers | 1 |
| Electronics | 8 |
| Geophysics | 1 |
| Information technology | 1 |
| Military | 1 |
| Space | 1 |
| Technology | 1 |
| |||
| 中继装置; 继电器组 | |||
| 继电器 | |||
|
relay unit : 20 phrases in 9 subjects |
| Aviation | 5 |
| Communications | 1 |
| Computers | 1 |
| Electronics | 8 |
| Geophysics | 1 |
| Information technology | 1 |
| Military | 1 |
| Space | 1 |
| Technology | 1 |