Anomalous refraction is believed to be the main error source for classical astrometry.
反常折射已成为传统天体测量学的主要误差来源。
As the main error source of SINS, the errors of inertial instrument must be compensated.
惯性元件误差是捷联惯导系统的主要误差源，必须在导航过程中加以补偿。
The radio refraction error is a main error source among the factors affecting the accuracy of the measured data.
电波折射误差是影响靶场测量数据质量的主要误差源之一。
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