Basis on chromatographic theory and solution theory, the retention equation of RP HPLC was derived.

根据色谱理论和溶液理论推导出反相高效液相色谱保留值方程。

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According to the zero - growth theory of library collection, this paper approaches the retention period about the back number of periodicals in library.

摘要本文依据“藏书零增长理论”对图书馆过期期刊的保存期问题进行探讨。

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The theory about point prescription, the depth of needle insertion, needling manipulation and the time for needle retention have different characteristics in different schools.

不同流派配穴理论、进针层次、行针手法、留针时间等各有特点。

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The theory goes that being associated with the retention or resumption of weekly bin rounds enables the Communities Secretary Eric Pickles to strike a popular chord while diverting attention from his austerity measures elsewhere.

BBC: Local councils get rewards for rubbish