综述了青霉素乙酰化固定化酶和头孢氨苄酶法缩合工艺的研究进展；
The advances in immobilized acetylase of penicillin and process of enzymatic condensation in cephalexin synthesis were reviewed.
本文采用气相色谱法，用HP-5毛细管柱，以邻苯二甲酸二异丁酯为内标物，用氢火焰离子化检测器对甲氧苄氟菊酯进行定性定量分析。
A method for the determination of metofluthrin TC by GC with HP-5 capillary column, diisobutyl phthalate as internal standard and FID detector was described.
结果在亚苄混合物诱导的小鼠食管癌变过程中，全基因组甲基化修饰是逐渐降低的，在达到一定程度后即保持一种稳态。
It is the result that in process of pathological changes induced by nitrosamine compounds, the genome methylation level were gradually fall, and then keep the steady statements.
结果在亚苄混合物诱导的小鼠食管癌变过程中，全基因组甲基化修饰是逐渐降低的，在达到一定程度后即保持一种稳态。
It is the result that in process of pathological changes induced by nitrosamine compounds, the genome methylation level were gradually fall, and then keep the steady statements.
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