The area below this curve is measured, e. g. by counting small squares if graph paper is used.

要测出这条曲线下的面积，例如，可使用方格纸以计数曲线下小方格的数目。

youdao

The area below this curve is measured, e. g. by counting small squares if graph paper is used.

要测出这条曲线下的面积，例如，可使用方格纸以计数曲线下小方格的数目。

youdao