 |
| 脊 线: 48 phrases in 16 subjects |
| Agriculture | 2 |
| Automobiles | 1 |
| Bridge construction | 1 |
| Desert science | 2 |
| Engineering geology | 2 |
| General | 1 |
| Hydroelectric power stations | 2 |
| Metallurgy | 1 |
| Mountaineering | 4 |
| Oil / petroleum | 6 |
| Plastics | 1 |
| Polygraphy | 2 |
| Space | 1 |
| Surgery | 1 |
| Technology | 20 |
| Textile industry | 1 |