本文从衍射积分公式出发，利用贝塞尔函数，求得夫琅禾费环孔衍射积分的精确解，并对衍射图样进行分析讨论。
In this paper, diffraction integral equations and Bessel Functions are used to getting perfect solution of Fraunhofer ring aperture diffraction, and the diffraction pattern is analysed.
从衍射积分公式出发，利用贝塞尔函数，求得夫琅禾费环孔衍射积分的精确解，并对衍射图样进行了分析。
Diffracton integral equations and Bessel Functions are used to get perfect solution of Fraunhofer ring aperture diffraction, and the diffraction pattern is analysed.
本文以贝塞尔函数级数和的形式，给出了动态特性的理论解析解。
This paper gives a theoretical and analytical solution of the dynamic response for long gas pipeline in the form of infinite series with Bessel functions.
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