容许 荷载 : 47 phrases in 13 subjects |
Automobiles | 4 |
Bridge construction | 6 |
Chemistry | 1 |
Compressors | 1 |
Electronics | 1 |
Engineering geology | 4 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 2 |
Hydroelectric power stations | 2 |
Oil / petroleum | 2 |
Shipbuilding | 2 |
Space | 1 |
Technology | 20 |