tetrads四色相(等间隔)配色tetran.脂鲤（南美产的热带鱼）pref.四；四原；四基tetrabromobisphenolA四溴双酚Atetradelphous stamen四体雄蕊tetrapolar sexuality四板性tetrahydroxyxanthone恩四羟基氧杂蒽酮tetradecenly acetate醋酸十四烯酯Tetrapyle octacanthan.八棘四门孔虫tetramethyl-silane四甲基硅烷tetrahydroxy benzene四羟基苯tetramethylolmethane季戊四醇tetrazene derivative四氮衡衍生物起爆药