Then these equations are solved numerically by approximating the unknown displacement difference to a product of the fundamental density function and polynomials.
其次，在数值求解该组方程的过程中，未知函数裂纹表面位移差被近似为位移差的基本密度函数与多项式之积。
By deriving balanced differential equation of buried pipeline, adopt finite difference method to analyze and calculate the effect of axial build-in force on pipeline transversely displacement.
推导出埋地管道的平衡微分方程，采用有限差分法分析并计算了轴向嵌固力对管道横向位移的影响。
Results:There were significant difference in the strength to resist bending, extending, lateral bending, axial torsion and axial displacement of the fusion unit between the two groups.
结果：复合骨环组在抗屈曲、抗伸展、抗侧弯和抗纵向位移方面与自体髂骨块组间存在显著性差异。
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