通过中心差分，建立有关的差分方程，并编写了相应的计算机处理程序。
Thedifferential equation of static force acting on BHA and the computer program to deal with subject mentioned above have been developed.
通过中心差分，建立有关的差分方程，并编写了相应的计算机处理程序。
Thedifferential equation of static force acting on BHA and the computer program to deal with subject mentioned above have been developed.
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