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平面大地控制网
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plane geodetic control network
平面大地控制网
按一定要求在地面选定一系列点,通过测量角度、距离或坐标差的方法求定点的平面坐标而构成的网状图形。又称水平大地控制网。
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E-commerce agent system
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更新时间:2025/3/16 9:10:41