The column polarity, selectivity and retention mechanism also were studied.

此外,还研究了毛细管柱的极性 、 选择性以及保留机理.

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It was used as a retention mechanism.

这被当作一种保留机制.

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The retention mechanism of phosphate anion on an anion exchange column was studied.

首次发现磷酸根离子在阴离子交换柱上以两个色谱峰流出.

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Top and bottom stem bushings of dissimilar material are required retention mechanism for the stem.

如果阀杆存在机械阻力时,就需要对阀杆的顶部和底部采用不同的衬套.

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From skin physiology angle we studied the hygroscopicity and moisture retention mechanism of skin moisturizer.

模拟皮肤结构将皮肤保湿剂分为闭塞剂和吸湿剂,从皮肤生理学角度研究了二者的吸湿、保湿机理.

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