粒状 结 构 : 53 phrases in 13 subjects |
Agriculture | 6 |
Animal husbandry | 2 |
Architecture | 1 |
Desert science | 2 |
Engineering geology | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 1 |
Metallurgy | 1 |
Oil / petroleum | 16 |
Plastics | 1 |
Soil science | 1 |
Space | 1 |
Technology | 19 |