底 质 : 226 phrases in 24 subjects |
Agriculture | 5 |
Animal husbandry | 3 |
Architecture | 3 |
Automobiles | 9 |
Chemistry | 2 |
Cosmetics and cosmetology | 1 |
Dermatology | 1 |
Desert science | 2 |
Earth sciences | 9 |
Ecology | 4 |
Electronics | 14 |
Engineering geology | 2 |
Environment | 1 |
General | 4 |
Geology | 1 |
Life sciences | 1 |
Metallurgy | 4 |
Navigation | 1 |
Oceanography & oceanology | 5 |
Oil / petroleum | 13 |
Soil science | 1 |
Space | 2 |
Technology | 131 |
Water resources | 7 |