求积仪。测定图形面积的仪器。常用的为极点求积仪。使用时将底部具有小针的重物压于图纸上作为极点,然后将针尖沿着图形的轮廓线移动一周,在记数盘与测轮上读得分划值,从而算出图形的面积。求积仪器分数字型和指针型两种。
n. planimeter
提出一个数字求积仪安置值m的通用公式。
This paper presents an universal formula of assign m in the digital planimeter.
目前常用的量算面积方法有方格纸法、平行线法、求积仪法。
Graph paper, parallel, and planimeter methods are current tools for acreage calculation.
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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