正棱台
正棱台-
通过求解两同轴、平行、等高、上下底面分别共面的正棱台导体面的电容，给出了求解电容的分割组合法。
An approach of division and combination for capacitance is obtained by using two coaxial and parallel conducting surfaces of a frustum of a prism of regular polyhedron with the same height and two undersides in a plane respectively .
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古巴比伦正四棱台体积公式古证复原
Reconstructing the Proof of Babylonian Volume Formula for the Frustum of a Square Pyramid