环体体积的一种计算方法

摘要

Based on the idea of combining arith and figure, this paper uses the element method and the shape graph coordinate formula to deduce a calculating formula for the volume of ring rotating object and gives the application.%根据数形结合思想，运用重积分的微元法和形心坐标公式推导出环体体积的一个计算公式，并给出了该公式的具体应用．