 |
| |||
| space defence | |||
| 防天: 121 phrases in 14 subjects |
| Agriculture | 1 |
| Air defense | 5 |
| Automobiles | 3 |
| Aviation | 13 |
| Chemistry | 2 |
| Drilling | 13 |
| Electronics | 3 |
| General | 2 |
| Mechanics | 1 |
| Oil / petroleum | 4 |
| Space | 42 |
| Technology | 17 |
| Textile industry | 4 |
| United States | 11 |
|
| |||
| space defence | |||
| 防天: 121 phrases in 14 subjects |
| Agriculture | 1 |
| Air defense | 5 |
| Automobiles | 3 |
| Aviation | 13 |
| Chemistry | 2 |
| Drilling | 13 |
| Electronics | 3 |
| General | 2 |
| Mechanics | 1 |
| Oil / petroleum | 4 |
| Space | 42 |
| Technology | 17 |
| Textile industry | 4 |
| United States | 11 |