... 三角高程测量(Trigonometric Leveling) 光电三角高程测量(Electro-optical Trigonomeric Levenng) 地形图的比例尺(Scale) ...
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该系统能处理任意边界、各种比例尺的地形图。
This system can process the topographic maps of arbitrary boundary and all kinds of scale.
传统的库容计算方法是在已有的地形图上采用求积仪法进行，当精度要求较高时，需到现场实测更大比例尺的地形图。
In traditional reservoir capacity calculation, a planimeter is used to obtain a reservoir capacity from topographic maps and large scale topographic maps are needed if high accuracy is required.
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