动态特性 : 65 phrases in 19 subjects |
Agriculture | 1 |
Automobiles | 5 |
Aviation | 3 |
Business | 1 |
Communications | 1 |
Drilling | 2 |
Earth sciences | 1 |
Electric machinery | 1 |
Electronics | 7 |
Explosives and Explosive Ordnance Disposal | 2 |
Hydroelectric power stations | 1 |
Information technology | 1 |
Metallurgy | 2 |
Mining | 1 |
Oil / petroleum | 1 |
Plastics | 2 |
Space | 4 |
Technology | 25 |
Wind Energy | 4 |