On the basis of finding out the reasons for colloidal silica fracture, the bed layer flow speed was decreased through increasing 18.3% of the adsorption column diameter to lead-out a part of tail gas.

在找出硅胶破碎原因的基础上，通过吸附塔直径放大18.3%，引出部分尾气，使床层流速降低。

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Pure TS99 could be obtained from pretreatment fermentation broth through macroreticular adsorbent, silica gel column chromatography and thin-layer chromatography.

发酵液经过预处理后，依次用大孔树脂吸附，硅胶柱吸附层析和薄层层析等分离方法即可获得农用抗生素TS99纯品。

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Data access is through reading and writing the data storing in spatial column of layer table.

矢量数据的访问就是对层表中空间数据字段的读写操作。

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