分级 筛 : 54 phrases in 14 subjects |
Agriculture | 5 |
Animal husbandry | 1 |
Bridge construction | 3 |
Construction | 1 |
Electronics | 1 |
Engineering geology | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
Forestry | 1 |
General | 2 |
Metallurgy | 10 |
Oil / petroleum | 2 |
Polymers | 1 |
Project management | 1 |
Technology | 24 |