dialup拨号dialn.拨号盘；刻度盘；日晷；钟面v.拨号；打电话dialkyl dimethylammonium bromide双甲基氨基物溴化物dialkyl quaternary ammonium salt双烷基季铵盐diallydimethyl ammonium chloride二甲基二烯丙基氯化铵diallyldimethylammonium chloride二丙烯基二甲基氯化铵dialkyl cyclohexanedicarboxylate环己二羧酸二烷基酯dial-tone-first coin service拨号音超前投币业务DIAL LINKING MACHINE SPARE PARTS缝合机零配件dial-in interactive connections拨号交互式联结dialkylamino-acid decarboxylase二烷基氨基酸脱羧酶dialkyl quaternary ammonium salts双烷基季铵溴盐