稳定条 件: 56 phrases in 17 subjects |
Agriculture | 3 |
Automobiles | 1 |
Aviation | 1 |
Bridge construction | 2 |
Business | 6 |
Desert science | 1 |
Earth sciences | 3 |
Economy | 2 |
Electric machinery | 1 |
Electronics | 1 |
Engineering geology | 3 |
Finances | 1 |
Information technology | 1 |
International trade | 1 |
Oil / petroleum | 1 |
Space | 3 |
Technology | 25 |