短語詞組短語preparative stage 準備期preparative method 制備方法preparative biochemistry [生化]制備生物化學preparative electrophoresis 制備式電泳;運用制備電泳;制備電泳;制備型電泳preparative separation 制備分離preparative work 準備工作preparative colmn 制備柱preparative Darameters 制備蓡數(shù)preparative chemistry 制備化學 返回 preparative