 |
| 有效表面: 29 phrases in 14 subjects |
| Agriculture | 1 |
| Automobiles | 1 |
| Aviation | 1 |
| Chemistry | 1 |
| Electric machinery | 1 |
| Electronics | 6 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Geophysics | 1 |
| Metallurgy | 1 |
| Plastics | 3 |
| Refrigeration | 1 |
| Space | 1 |
| Technology | 7 |
| Wind Energy | 3 |