| |||
| 密码文字 | |||
| 码字; 字母 | |||
| 代字字产品暗号 | |||
| 代码字母 | |||
| 代码字; 代码 | |||
| 码字 | |||
| 码; 字码; 码函; 密码电文; 密码信函 | |||
|
code letter : 14 phrases in 9 subjects |
| Business | 1 |
| Genetics | 1 |
| Hydroelectric power stations | 1 |
| Information technology | 2 |
| Molecular genetics | 1 |
| Nautical | 3 |
| Space | 3 |
| Telecommunications | 1 |
| Textile industry | 1 |