dich迪克DIabbr.教官（=drill instructor）Diogenes' lantern分离龙骨Dictyoploca simian.后目大蚕蛾dihedral symmetry双面对称diluent for gases气体稀释剂dicarboxylic acid二羧酸dibenzylsulfoxide二苄基亚砜Dichloropropionic二氯丙酸dihydrogranaticin二氢榴菌素dibenzyl fumarate富马酸二苄酯dihydro-thymine双氢胸腺嘧啶