Based on the Erlang Mountain Tunnel, the paper introduces application of EGM96 in correction of perpendicular deviation in plane network.
基于二郎山隧道工程，介绍了EGM96在平面网中垂线偏差改正的应用。
Chordal deviation is the perpendicular distance between the actual curve and the approximating line segments.
圆弧可以大量短直线模拟，弦长偏差是圆弧与直线的垂直距离。
However, during checking of the total axial run-out. deviation, the positions of the dial indicator are along a guiding (straight) line perpendicular to the datum axis A (see 18.7.8.3).
然而，在检查全轴向跳动时，百分表的位置是沿着垂直于基准轴线A的（直）引导线（见18.7.8.3）。
However, during checking of the total axial run-out. deviation, the positions of the dial indicator are along a guiding (straight) line perpendicular to the datum axis A (see 18.7.8.3).
然而，在检查全轴向跳动时，百分表的位置是沿着垂直于基准轴线A的（直）引导线（见18.7.8.3）。
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