使用 性能 : 34 phrases in 16 subjects |
Air defense | 1 |
Automobiles | 6 |
Aviation | 2 |
Business | 1 |
Chemistry | 1 |
Earth sciences | 1 |
Economy | 2 |
Electronics | 1 |
General | 2 |
Nautical | 2 |
Oil / petroleum | 1 |
Plastics | 1 |
Project management | 1 |
Refrigeration | 2 |
Space | 3 |
Technology | 7 |