principal column

As the principal drug, by a reverse-phase high-performance liquid chromatographic method ( RP-HPLC). Methods The extract of Qing ′ e Pill was refluxed with 75% ethanol, purified on an AB-8 macroporous adsorption resin column and then injected into HPLC system.

方法青娥丸提取物用75%乙醇提取，经AB8大孔吸附树脂纯化后，注入高效液相色谱仪。

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According to the wall testing process, we put finite element numerical simulation on the cavity wall which is set the ring beam but without structural concrete column, using discrete model to analysis the principal stress, cracks distribution and displacement of the wall.

参照墙体试验过程，对设置圈梁但无混凝土构造柱的空斗墙体进行有限元数值模拟，采用分离式模型对墙体的主应力、裂缝分布与墙顶位移变化进行分析。

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East of the religious complex was the largest scenic point, approximately twelve acres, with several magnificent pieces of architecture, including the nine-column principal structure surrounded by hills and brooks.

在宗教建筑群的东边是最大的景点，占地约12英亩（约73亩），颇有一些华丽的建筑，包括以九根柱子作为主要屋架的建筑，四周有山丘和小溪围绕。

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The principal findings are: It is important to the mesoscale systems that a column of cyclonic vorticity is gener-ated and developed within an unstable and warm air with moist, while a persistently in-tensive ascending motion is maintained with whole vorticity column.

主要结果指出：气旋性涡柱在不稳定暖湿气柱内生成和发展，以及与整个涡柱共存的上升运动的持续加强，对暴雨中尺度系统的发展具有重要的作用；

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