反作用力: 71 phrases in 14 subjects |
Agriculture | 1 |
Athletics | 1 |
Automobiles | 7 |
Aviation | 4 |
Drilling | 1 |
Electronics | 4 |
Engineering geology | 2 |
Explosives and Explosive Ordnance Disposal | 3 |
General | 5 |
Oil / petroleum | 4 |
Soil science | 5 |
Space | 10 |
Sports | 7 |
Technology | 17 |