它为确定截交线的投影范围，准确地绘制截交线，提供了理论依据。
This offers a theoretical ground for setting the region of projection and constructing accurately the lines of intersection.
在这个几何观测角度下，预言家探测仪的每次探测的空间投影范围大约在300米和700米见方。
In this viewing geometry, the spatial footprint of each Diviner detector was roughly 300 by 700 meters.
您可以通过保证范围（每个投影长度单元对应多少像素）在 x 和 y 方向上相同（或接近）来防止这种情况发生。
You can prevent this by making sure the scale (how many pixels correspond to each projected unit of distance) is the same (or close) in both the x and y directions.
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