拱 架: 294 phrases in 15 subjects |
Agriculture | 4 |
Architecture | 31 |
Automobiles | 9 |
Aviation | 1 |
Bridge construction | 28 |
Construction | 2 |
Electronics | 5 |
Engineering geology | 1 |
Forestry | 1 |
General | 7 |
Hydroelectric power stations | 4 |
Metallurgy | 4 |
Oil / petroleum | 1 |
Rail transport | 3 |
Technology | 193 |