| |||
| 闭锁转换开关; 阻断开关 | |||
|
blocking switch : 7 phrases in 5 subjects |
| Air defense | 1 |
| Electric machinery | 1 |
| Electronics | 2 |
| Space | 2 |
| Technology | 1 |
| |||
| 闭锁转换开关; 阻断开关 | |||
|
blocking switch : 7 phrases in 5 subjects |
| Air defense | 1 |
| Electric machinery | 1 |
| Electronics | 2 |
| Space | 2 |
| Technology | 1 |