 |
| |||
| 特征分析 | |||
|
characteristic analysis : 12 phrases in 7 subjects |
| Air defense | 1 |
| Electricity | 1 |
| Electronics | 1 |
| Engineering geology | 1 |
| Geophysics | 1 |
| Shipbuilding | 1 |
| Technology | 6 |
|
| |||
| 特征分析 | |||
|
characteristic analysis : 12 phrases in 7 subjects |
| Air defense | 1 |
| Electricity | 1 |
| Electronics | 1 |
| Engineering geology | 1 |
| Geophysics | 1 |
| Shipbuilding | 1 |
| Technology | 6 |