Let x be the sum of a and b.

设x为a加b之和。

《牛津词典》

What's the cheapest way to get X packages from point a to point B?

将X个包裹从a点送到b点的最便宜方法是什么？

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Conversion Method between Construction Coordinate (a, b) and Land Measuring Coordinate (X, Y).

施工坐标(A,B)与大地测量坐标(X,Y)之间的几种换算方法。

youdao

Conversion Method between Construction Coordinate (a, b) and Land Measuring Coordinate (X, Y).

施工坐标(A,B)与大地测量坐标(X,Y)之间的几种换算方法。

youdao