DIFO甲氟磷, 四甲氟[杀虫药]DIabbr.教官（=drill instructor）dichlorosulfonphthalein二氯磺酞Dichochrysa vitticlypean.唇斑叉草蛉dibutyl dithiocarbamate二硫代氨基甲酸二丁酯Dicranopteris dichotoman.芒萁dibenzoyl tartaric acid二苯甲酰酒石酸dilatancy damage border扩容损伤边界Di-trimethylolpropane双三羟甲基丙烷dihydroxydiphenylhexene人造雌酚dichotic listening test双耳两分听话试验dihalogenophenyl borine苯基二卤化硼