单词：chemical modification
chemical modification的用法和样例：
例句
- This research advance was summarized in synthetic methods of the isoflavone derivatives in chemical modification.本文从异黄酮侧链化学修饰出发综述了该类化合物衍生物的合成研究。
- Pore and surface chemical modification technology of zeolite is an important way of second synthesis of molecular sieves.沸石分子筛孔道和表面化学修饰是对分子筛进行二次合成的重要手段。
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