 |
| |||
| 节理频数 | |||
| 节理频率 | |||
| 联合频率 | |||
|
joint frequency : 26 phrases in 11 subjects |
| Air defense | 3 |
| Aviation | 1 |
| Desert science | 1 |
| Economics | 1 |
| Electronics | 7 |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Geophysics | 1 |
| Mathematics | 1 |
| Oil / petroleum | 2 |
| Technology | 7 |