In this paper, ship shafting alignment was analyzed in detail by use of three-moment method. And more, the concise dealing with ship shafting and practical parameters were given.

针对某一具体船舶轴系，利用三弯矩法对其校中作了详细分析，给出轴系简化处理方法和实际参数。

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Scattering from three-dimensional cavities is solved using the wavelet-MoM method, while the moment matrix is sparsified with help of the wavelet transform.

该文采用小波矩量法求解导电平面上的三维腔体散射，利用小波变换稀疏化矩量矩阵，加速其求逆，减少了腔体散射的总体计算时间。

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