计算了图像比例尺，方便的将数字图像尺寸转换为实际尺寸；
Design the image scale, convenient of convert the numerical image size as actual size.
此图拍摄点距土星526,000英里，太阳-土星-飞船夹角(相位)为74度，图像比例尺为每个象素31英里。
The images were obtained at a distance of approximately 526,000 miles from Saturn and at a Sun-Saturn-spacecraft, or phase, angle of 74 degrees. Image scale is 31 miles per pixel.
我感觉是这样的：地图的比例尺和图像分辨率是什么关系？
What is the relationship between the scalar and spatial resolution of the map ?
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