It is not like in a triple integral.
这与三重积分不同。
This paper indicates and proves the method of making use of symmetry to predigest calculation of cylindrical coordinates triple integral.
运用对称性简化计算柱面坐标三重积分，并给予证明。
This essay deduces a way of calculating triple integral by the use of symmetry, by defining the symmetry of 3-degree area, and applying it to the triple integral computation.
将空间区域的对称性应用于三重积分的计算之中，归纳出了利用对称性计算三重积分的方法。
Triple integral expression of the radiation impedance of square piston is deduced and the numerical results of the radiation impedance are calculated with the method of Gaussian numerical integral.
利用高斯数值积分方法，推导了方形活塞辐射阻抗的三重积分表达式，计算了方形活塞声源的辐射阻抗。
Triple integral expression of the radiation impedance of square piston is deduced and the numerical results of the radiation impedance are calculated with the method of Gaussian numerical integral.
利用高斯数值积分方法，推导了方形活塞辐射阻抗的三重积分表达式，计算了方形活塞声源的辐射阻抗。
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