voids ratio: 40 phrases in 15 subjects |
Automobiles | 1 |
Cement | 4 |
Construction | 12 |
Electrical engineering | 1 |
Electronics | 2 |
Engineering geology | 2 |
Geology | 3 |
Geophysics | 1 |
Military | 1 |
Mining | 3 |
Road works | 3 |
Seismology | 2 |
Silicate industry | 1 |
Technology | 3 |
Transport | 1 |