According to the critical point theory, a class of problems of elliptic boundary value with an asymptotically linear term and singular term is studied.

利用临界点理论，研究了一类含有渐近线性项和奇异项的半线性椭圆方程的边值问题。

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It is shown that the expression of electric-type dyadic Green's function is the sum of an eigen-mode expansion containing nine dyadic components and a singular term.

得到的电型并矢格林函数表达式由包括九个并矢分量的本征模展开式和一个奇异项组成。

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Realizing of algorithm of composite data filter and eliminating singular term using first difference method in data collection and processing were analyzed and calculation results were given.

介绍了建材检测微机控制系统总体结构，详细分析了数据采集与处理过程中复合数据滤波、一阶差分法剔除奇异项算法的实现过程，给出了计算结果。

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