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.
研究了试样总应力、循环孔隙水压力、有效应力随时间的变化规律及试样有效应力与轴向应变的关系曲线。
Curves of total stress and time, of cycle pore water pressure and time, of effective stress and time, of effective stress and axial strain are respectively studied.
在环孔法测试织物的基础上，采用正交试验设计、模糊分析的方法优选试验参数，为环孔法测试织物提供了依据。
The best experimental parameters were Chosen through orthogonal experimental design and fuzzy analysis. The analytical results provided basis for application of ring-hole measuring fabric.
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