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起重桅杆 : 58 phrases in 13 subjects |
Architecture | 1 |
Automobiles | 1 |
Bridge construction | 1 |
Construction | 2 |
Electronics | 1 |
Engineering geology | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
Hydroelectric power stations | 1 |
Metallurgy | 1 |
Oil / petroleum | 1 |
Port facilities | 1 |
Rail transport | 1 |
Technology | 45 |