主 动 轴 : 136 phrases in 17 subjects |
Agriculture | 1 |
Automobiles | 17 |
Aviation | 3 |
Chemistry | 1 |
Compressors | 1 |
Computer numerical control | 4 |
Electric machinery | 2 |
General | 2 |
Hydroelectric power stations | 1 |
Mechanic engineering | 2 |
Metallurgy | 7 |
Oil / petroleum | 1 |
Plastics | 1 |
Rail transport | 1 |
Shipbuilding | 7 |
Space | 2 |
Technology | 83 |