definite integral

definite-integral的词性：
n.Mathematics （名词）【数学】

1. An integral that is calculated between two specified limits, usually expressed in the form ^‰?(x)dx. The result of performing the integral is a number that represents the area under the curve of ?(x) between the limits and the x -axis.
定积分：在两个特定的极限之间计算出来的积分，通常用^‰?(x)dx 的形式表示。计算积分的结果是得出一个数，它表示极限和 X 轴之间的 ?(x) 曲线以下的区域