 |
| |||
| exterior floor | |||
| 外 地 面: 18 phrases in 11 subjects |
| Air defense | 1 |
| Architecture | 1 |
| Aviation | 3 |
| Bridge construction | 1 |
| Engineering geology | 2 |
| General | 1 |
| International trade | 1 |
| Nautical | 1 |
| Rail transport | 1 |
| Technology | 5 |
| United States | 1 |
|
| |||
| exterior floor | |||
| 外 地 面: 18 phrases in 11 subjects |
| Air defense | 1 |
| Architecture | 1 |
| Aviation | 3 |
| Bridge construction | 1 |
| Engineering geology | 2 |
| General | 1 |
| International trade | 1 |
| Nautical | 1 |
| Rail transport | 1 |
| Technology | 5 |
| United States | 1 |