连接套筒 : 31 phrases in 14 subjects |
Architecture | 1 |
Automobiles | 4 |
Aviation | 1 |
Construction | 2 |
Drilling | 1 |
Engineering geology | 1 |
General | 1 |
Hydroelectric power stations | 3 |
Mechanics | 1 |
Metallurgy | 2 |
Oil / petroleum | 3 |
Space | 1 |
Technology | 9 |
Telecommunications | 1 |