为计算地面上具有高程的两点间的大地距离,构造了一个过两已知点的新椭球,确定出了新椭球的有关参数,在此基础上给出了计算大地距离的非迭代法和大椭圆法,并与传统方法进行了精度比较。
In order to calculate the geodetic distance of two points that are far from the refernced ellipsoid, a new ellipsoid which passes the two points is constructed, then its parameters are determined.
旅行时你会发现各地并没有差别:每个城市都与其他城市相似,城市互换形式、秩序以及距离,飘渺的尘雾漫绕大地。
Traveling, you realize that differences are lost: each city takes to resembling all cities, places exchange their form, order, distances, a shapeless dust cloud invades the continents.
距离海地大地震发生近一星期后,尽管国际伸出巨大援手,仍有成千上万的灾民需要救助。
Nearly a week after the Haiti earthquake struck, tens of thousands of victims are still waiting for aid, despite huge international efforts.
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