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为了简捷和准确地测设高等级公路，介绍了高等级公路大地平面直角坐标和理论公式推导、计算实例以及附会导线精度评定的计算方法。
In order to measure the high-grade highway simply and accurately, the derivation of the Cartesian coordinates and theoretical formula of the high-grade highway, the calculation example and the method of calculating the accuracy of the attached conductor are introduced.