嘧啶和嘌呤碱基,嘧啶和嘌呤碱基,miding he piaoling jianji,嘌呤,miding,jianji,piaoling,[拼音]:miding he piaoling jianji[外文]:pyrimidine and purine bases嘧啶和嘌呤的一类衍生物,为核苷酸的组分。嘧啶和嘌呤都是含氮杂环化合物,若这些环与...