...凉圭冈 土苟遍访赢怔球噬备盗曹悠 则筛悲雌训嗓塞拷讼辜炒霞 汀羹 采用自由网平差方式，即秩亏自由网平差（Free Net Adjustment）。分为以下四个步骤： 步骤一：由于在观测值中可能存在粗差，因此首先需要进行粗差探测及剔除。
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rank defect free net adjustment 秩亏自由网平差
Compare to the free net adjustment result, these two unit weighted errors are closely approximated.
通过与自由网平差结果对比表明，两种平差计算得到的单位权中误差相差不大，近似相等。
The method of choosing data by free net adjustment makes adjustment accuracy improved greatly, so it is an addition to the method of data screening by traditional classical adjustment.
这是对传统经典平差数据筛选方法的一种补充，使得平差精度大为提高。
IC design engineers are focusing on these two kinds of phase - shift - net works, because of their possibility of easy integration and free of adjustment.
由于此两种移相网络易实现集成化、免调整，越来越被设计集成电路的工程师重视。
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