双 层的 : 66 phrases in 19 subjects |
Agriculture | 4 |
Architecture | 1 |
Audio electronics | 1 |
Automobiles | 3 |
Aviation | 1 |
Business | 1 |
Cables and cable production | 1 |
China | 1 |
Drilling | 3 |
Economy | 1 |
Electronics | 2 |
Explosives and Explosive Ordnance Disposal | 2 |
General | 17 |
Geophysics | 2 |
International trade | 1 |
Metallurgy | 2 |
Space | 2 |
Technology | 15 |
Textile industry | 6 |