主柱和道士在宕山上炼丹，后来县令章君明下令封山，丹砂流出之后，主柱给县令炼丹，县令吃了后，五年就能飞了，后来一同上山，并最终一心向道。
辊环将被固定在主轴上，主柱由滚珠轴承带动。该构造能提供最强的刚性。
The rolls to be ground are fixed in a main shaft running on ball takeings, designed to offer the maximum rigidity.
我厂可为用户加工各种三坐标测量机的花岗石底座、主柱、横梁、导轨等。
Our factory can provide a variety of 3-coordinate measuring machines and granite base, main columns, beams, rails and so on.
在建筑外墙，安装中间钢立柱（在2个主柱之间），用来支撑檩条和墙面板。
On building peripheral, intermediate steel columns will be installed (in between 2 main columns), in order to support wall purlins and cladding.
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