... equiangle projection 等角投影 正角投影 equiareal projection 等积投影 正积投影 equidistant projection 等距投影 正距投影 ...
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map equiareal projection 地图等积投影
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In order to satisfy the requirement of high precision in map equiareal projection, the precise forward and inversion formulas of ellipsoid trapezoid area are studied out according to the basic theory.
在地图等积投影中，椭球面梯形面积的正、反算方法和精度是关键。
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