重混凝土 : 98 phrases in 11 subjects |
Architecture | 3 |
Drilling | 1 |
Ecology | 1 |
Electronics | 5 |
Engineering geology | 3 |
Explosives and Explosive Ordnance Disposal | 1 |
Hydroelectric power stations | 11 |
Metallurgy | 1 |
Navigation | 2 |
Oil / petroleum | 9 |
Technology | 61 |