| |||
total density | |||
overall density | |||
gross density |
总 密度 : 35 phrases in 10 subjects |
Agriculture | 1 |
Business | 1 |
Earth sciences | 2 |
Electronics | 6 |
Engineering geology | 1 |
Geophysics | 3 |
Information technology | 1 |
Oil / petroleum | 2 |
Technology | 17 |
Water resources | 1 |