起 振: 82 phrases in 15 subjects |
Automobiles | 4 |
Aviation | 3 |
Bridge construction | 2 |
Chemistry | 4 |
Construction | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 10 |
Metallurgy | 4 |
Oil / petroleum | 3 |
Piezoelectric crystals | 1 |
Securities | 1 |
Space | 1 |
Sports | 3 |
Technology | 39 |
Wind Energy | 5 |