roothold n.根部固著力；使根固定之處rootery 腐根土rooter plough [經(jīng)濟學]掘根犁rooter n.拔根者；用鼻掘土的動物；挖土機rootedly adv.生了根地rooted fold [能源科學技術]原地褶皺rooted adj.根源的；根深蒂固的；固定住的動詞root的過去式和過去分詞形式.rootdozer n.除根機rootdirectory 根目錄rootbound adj.根部受束縛的rootbeer n.麥根啤酒rootball 團根rootage ratio [農業(yè)科學]生根率rootage n.根部生根；根深蒂固root-weld 打底焊root-weight 根重root-water-uptake rate [農業(yè)科學]根系吸水速率root-water-uptake model [農業(yè)科學]根系吸水模型root-tip culture [農業(yè)科學]根尖培養(yǎng)root-stock n.根兢