challenge response
| mechanism
| challenge response | |
| manag. | 挑战反应 |
| mechanism | |
| gen. од. | 机械装置 |
| auto. | 机械操作 |
| f.trade. | 机械 |
| hydroel.st. | 机构 |
| hydroel.st. од. | 机构 |
| jewl. | 机 |
| leath. | 物理过程; 办法 |
| met. | 机构学 |
| |||
| 挑战反应 | |||
|
challenge response : 5 phrases in 4 subjects |
| Aviation | 1 |
| Cryptography | 2 |
| Electronics | 1 |
| Information technology | 1 |