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整平全站仪时,先将水准管与一对脚螺旋连线,转动两脚螺旋使气泡居中,再转动照准部 ,调节另一脚螺旋使气泡居中。

时间：2021-09-02 15:25 关键词：联大河南城建学院数学地形测量学

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平行@#@90度

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