| |||
| 安全装置 | |||
| 保密装置 | |||
|
security device : 7 phrases in 5 subjects |
| Cryptography | 1 |
| Electronic commerce | 1 |
| Electronics | 3 |
| Information technology | 1 |
| Nuclear physics | 1 |
| |||
| 安全装置 | |||
| 保密装置 | |||
|
security device : 7 phrases in 5 subjects |
| Cryptography | 1 |
| Electronic commerce | 1 |
| Electronics | 3 |
| Information technology | 1 |
| Nuclear physics | 1 |