Computing Y coordinates involves scaling a value from one range to another.

计算y坐标要将某一个值按比例从一个范围缩放到另一个范围。

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For a given value of x, so that's a given slice, I have a range of values for y, that is, from this picture at the left most point on that slice to the rightmost point on that slice.

对于给定的x，对应一个切面，就可以得到一个y的取值范围，从图片上看，是从切面的最左边到最右边。

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So, if we want to set it up instead dx dy, then it means we are going to actually look at the converse question which is, for a given value of y, what is the range of values of x?

如果要用dxdy来替换，就是说,转化为与之相反的问题来看，给定y的一个值，那么x的取值范围是什么呢？

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Compact but with a full range of features and allowing the ability to stay social on-the-go, the GALAXY Y is an ideal device for younger consumers.

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It took 19 minutes for the Ospreys' first scoring chance, a long-range penalty on the right from Biggar that never quite had the legs, but the visitors stunned Parc y Scarlets minutes later with the game's first try.

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