DIFC=Difference Counter 差分计数器DIabbr.教官（=drill instructor）dichlorotetrafluoroethanen.二氯四氟乙烷dichloro isocyanuric acid二氯异氰尿酸Dihedral corner reflector二面角反射器dicyc-lohexyl phthalate邻苯二甲酸二环已酯, 酞酸二环已酯di-n-propyl phosphite二正丙基亚磷酸酯dizygotheca elegantissima孔雀木dicyclopentadienyl nickel二茂镍dioxydemeton-S-methyl磺吸磷dichotomous starwort herb叉歧繁缕dioscirea nippoica makino穿山龙