Nutriention营养成分nutrientadj.营养的；滋养的n.营养物；营养品nutrient requirement rate养分需要量nutrient media components培养基组分nutrient retention factor营养素保留因子nutrient characterization营养特性nutrient-film technique养分膜技术nutrient utilization rate养分利用率nutrient solution control营养液控制Nutrient-rich substrate营养基质nutrients release feature养分释放特性nutrient-use efficiency营养物质利用率