【摘要】 文章对河道架设桥梁测量中以桥墩之间的限差来限制控制网的精度指标 ,利用误差椭圆理论采用计算机进行控制网优化设计更多还原

【Abstract】 In this paper,that the accuracy of the construction control survey network is controlled with the limiting difference between the bridge abutments, and the control networks is designed by computer with the elliptic error theory is described.更多还原