羟基 qiǎngjī hydroxyl group Origin Definitions Defs Strokes Stroke Words Sentences Sents 对羟基苯甲酸酯 duìqiǎngjīběnjiǎsuānzhǐ paraben paraben (chemistry)羟基丁酸 qiǎngjīdīngsuān hydroxybutyric acid gamma-Hydroxybutyric acid (GHB)羟基磷灰石 qiǎngjīlínhuīshí hydroxyapatite hydroxyapatite (calcium phosphate mineral forming bone and tooth enamel)