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对称 轴 : 275 phrases in 24 subjects |
Agriculture | 14 |
Architecture | 4 |
Automobiles | 4 |
Aviation | 20 |
Bridge construction | 6 |
Chemistry | 5 |
Compressors | 1 |
Electronics | 6 |
Engineering geology | 7 |
Explosives and Explosive Ordnance Disposal | 2 |
General | 10 |
Geophysics | 3 |
Hydroelectric power stations | 7 |
Medical | 1 |
Metallurgy | 17 |
Mining | 1 |
Nautical | 1 |
Oil / petroleum | 12 |
Plastics | 5 |
Reproductive biology | 4 |
Space | 19 |
Technology | 115 |
Thermal Energy | 1 |
Wind Energy | 10 |