方程组 : 130 phrases in 21 subjects |
Architecture | 1 |
Automobiles | 1 |
Aviation | 2 |
Bridge construction | 2 |
Business | 43 |
Chemistry | 2 |
Corporate governance | 1 |
Earth sciences | 6 |
Economy | 1 |
Electric machinery | 1 |
Electronics | 1 |
Engineering geology | 1 |
General | 2 |
Hydroelectric power stations | 3 |
Mathematics | 7 |
Mining | 1 |
Oil / petroleum | 3 |
Polymers | 1 |
Sports | 2 |
Statistics | 2 |
Technology | 47 |