permutation code
| switching system
| permutation code | |
| tech. | 互换码 |
| switch system | |
| mil., air.def. | 开关系统 |
| switching system | |
| auto. | 开关 系统 |
| auto.ctrl. | 切换系统 |
| el. | 交换 系统 |
| IT | 开关系统 |
| IT од. | 交换系统 |
| telecom. | 转接装置 |
| |||
| 互换码 | |||
| 置换码 | |||
|
permutation code : 4 phrases in 2 subjects |
| Technology | 2 |
| Telecommunications | 2 |