耕作土壤肥力性状
Cultivated soil fertilizer trait
土壤耕作部件
working part in soil
Soil cultivating component
土壤耕作生态类型
Soil farming ecological types
土壤结构交互作用
soil-structure interaction
土壤-结构相互作用
Soil- structural interaction
soil-structure interaction
soil-structure dynamic interaction
广义土壤结构指数
generalized soil structure index
合成土壤结构改良剂
Polymeric soil cond tioners
混凝土结构构件
concrete structural components
既有混凝土结构构件
existeing reinforced concrete structural members