densn.牙齿；齿状部分名词den的复数形式.denn.兽穴；集聚地v.穴居dendrodendritic树状树突的dendrite growth枝晶长大Denig operation德尼格手术denuded surface新生表面denitrifecation脱硫脱硝denitrificetion反硝化denormalizationn.反向规格化；阻碍正常化denominal verbt名转动词dens rotationis旋转牙dendrotrifidiol鱼藤二醇