土壤－冬小麦系统
soil-winter wheat system
soil-winter wheat ecosystem
大气和植被生态及土壤系统
atmosphere-ecosystem-soil system
稻田土壤系统熵
paddy soil system entropy
灌溉水－土壤系统
Irrigation water-soil system
双频振动压实机－土壤系统
double-frequency vibration compactor and soil syst
土壤系统分类
soil taxonomic classification
Isohumisols
soil taxonomy
soiltaxonomy
soil taxonomia classification
chinese soil taxonomic classification
Soil
chinese soil taxonomy
磁层-电离层系统(MI系统)
Magmetosphere-Ionosphere(MI) system
无限维离散系统系统
Infinite dimensional discrete time systems