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释义 quán
ㄑㄩㄢ有机化合物的一类,通式R-CHO。醛类中的乙醛(CH?-CHO),省称“醛”,医药上用来做催眠、镇痛剂 aldehydes, a class of organic chemical compounds with the formula R-CHO. Acetaldehyde (CH?-CHO), a member of the class, is used as hypnotic or analgesia in medicine
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