 |
| 外罩: 111 phrases in 23 subjects |
| Agriculture | 2 |
| Architecture | 1 |
| Astronautics | 1 |
| Automobiles | 15 |
| Aviation | 5 |
| Computer numerical control | 1 |
| Ecology | 1 |
| Electric machinery | 4 |
| Electronics | 1 |
| General | 10 |
| Mechanics | 3 |
| Metallurgy | 1 |
| Mountaineering | 1 |
| Nautical | 2 |
| Oil / petroleum | 2 |
| Plastics | 2 |
| Shipbuilding | 3 |
| Skydiving | 1 |
| Space | 7 |
| Technology | 41 |
| Textile industry | 5 |
| Thermal Energy | 1 |
| Wind Energy | 1 |