Transition to the three-dimensional space, then we obtain the equation of equipotential surface families of charged conductor with surface of hyperboloid of one sheet.
利用保角变换，首先在二维平面得到双曲线型的等位线簇方程，然后过渡到三维空间，从而得到表面为单叶双曲面（两实半轴相等）的带电导体的等位面簇方程。
The computer program of three-dimensional finite element has been compiled using the method of load increment based on the element transition principle.
根据单元性质转换原理，编制了逐次加载法的三维有限元程序。
Applying for MARC software, three-dimensional numerical model of differential settlement at bridge-subgrade transition section was built.
应用MARC软件，建立路桥过渡段差异沉降的三维计算模型。
Applying for MARC software, three-dimensional numerical model of differential settlement at bridge-subgrade transition section was built.
应用MARC软件，建立路桥过渡段差异沉降的三维计算模型。
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