Denke登克denn.兽穴；集聚地v.穴居denitrifying bacterria硝化细菌dendranthema morifdium菊花Dendronina arborescensn.似树树虫Dendrobium aurantiacumn.线叶石斛denitrification system脱硝系统Dendrotrophe umbellatan.伞花寄生藤Dendrobium lituiflorumn.喇叭唇石斛Dendrobium densiflorumn.密花石斛Dendrobium guangxiensen.滇桂石斛denitrification process脱氮过程