基本解释甲基尿嘧啶核苷同根派生 英汉例句Methyluridine was enzymatically produced from guanosine and thymine by intact cells of Brevibacterium acetylicum QD9805. 用乙酰短杆菌完整细胞为酶源，以鸟苷和胸腺嘧啶为底物，酶法合成5-甲基尿苷。