地震图 : 86 phrases in 13 subjects |
Agriculture | 1 |
Bridge construction | 4 |
China | 3 |
Desert science | 3 |
Earth sciences | 1 |
Electronics | 1 |
Engineering geology | 9 |
Geophysics | 2 |
Hydroelectric power stations | 4 |
Oil / petroleum | 9 |
Space | 2 |
Technology | 45 |
United Nations | 2 |