复 合管 : 72 phrases in 23 subjects |
Air defense | 2 |
Architecture | 1 |
Automobiles | 4 |
Aviation | 2 |
Chemistry | 1 |
Drilling | 4 |
Economy | 1 |
Electronics | 4 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 1 |
Hydraulics | 1 |
Mechanics | 2 |
Metallurgy | 6 |
Navigation | 3 |
Oil / petroleum | 9 |
Plastic surgery | 1 |
Plastics | 1 |
Polymers | 1 |
Rail transport | 3 |
Refrigeration | 2 |
Space | 2 |
Surgery | 1 |
Technology | 19 |