 |
| |||
| 系统图 | |||
|
system map : 68 phrases in 8 subjects |
| Air defense | 1 |
| Architecture | 1 |
| Aviation | 7 |
| Earth sciences | 14 |
| Engineering geology | 1 |
| Geography | 2 |
| Space | 10 |
| Technology | 32 |
|
| |||
| 系统图 | |||
|
system map : 68 phrases in 8 subjects |
| Air defense | 1 |
| Architecture | 1 |
| Aviation | 7 |
| Earth sciences | 14 |
| Engineering geology | 1 |
| Geography | 2 |
| Space | 10 |
| Technology | 32 |