The formation of errors is supposed as a change process from a circle to an ellipse (ellipse hypothesis), and the reverse process is just the compensation process.
把误差的形成过程假设为从圆到椭圆的变化过程(椭圆假设)，其逆过程就是误差补偿的过程。
The analysis indicates that the conditions of second derivative of the above relevant factors play an important role in the formation of great circle route.
本文研究表明，上述影响因素的二阶经向变率的存在条件对于“大圆路径”形成起了重要作用。
And the Shanghai metropolis across the river, the location, and the formation of an international metropolis an hour economic circle, fast and convenient transportation.
与上海大都市隔江相望，地理位置优越，与国际大都市形成一小时经济圈，交通便捷迅速。
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