 |
| 填 隙: 246 phrases in 27 subjects |
| Air defense | 2 |
| Architecture | 14 |
| Automobiles | 6 |
| Aviation | 2 |
| Chemistry | 3 |
| Compressors | 2 |
| Construction | 2 |
| Dentistry | 1 |
| Desert science | 1 |
| Drilling | 3 |
| Earth sciences | 1 |
| Electric machinery | 4 |
| Electronics | 12 |
| Engineering geology | 8 |
| Football | 1 |
| General | 19 |
| Genetics | 1 |
| Hydroelectric power stations | 1 |
| Management | 1 |
| Mechanic engineering | 1 |
| Metallurgy | 22 |
| Oil / petroleum | 15 |
| Plastics | 4 |
| Space | 5 |
| Technology | 108 |
| Telecommunications | 4 |
| Wind Energy | 3 |
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