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通过模态分析，得到立柱和底座的前几阶固有频率和振型。
Modal analyses of the base frame and the vertical column were carried out to investigate their dynamic characters.
目的：建立柱前衍生HPLC法测定白土茯苓多糖中单糖的组成。
Objective: to establish precolumn derivation HPLC method to determine the monosaccharides in Heterosmilax japonica polysaccharide.
建立柱前衍生化-毛细管气相色谱法分离2,5 -己二醇对映体的方法。
A method for the enantioseparation of 2, 5-hexanediol by capillary gas chromatography with precolumn derivatization was proposed.
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