Landscapes are full of linear elements— roadways, train tracks, fencerows, ridgelines, tree branches.
各种风景中充满了线形的元素——小路，火车轨，栅栏，山脊线，树枝等。
For this reason, linear elements will usually be preferred for nonlinear analyses.
出于这个原因，线性元素通常是非线性分析的首选。
The Boundary element Method (BEM) with linear elements has an advantage in high precision of calculation.
采用线性单元的二维弹性问题边界元法具有计算精度高的优点。
According to its simulation results, this method has good adaptability when the controlled member contains non-linear elements or the controller member varies in a large range.
仿真结果表明：这种控制方法不仅对被控对象含有的非线性环节，以及被控对象参数在较大范围内的变化具有较好的适应能力。
Using the interpolation models for both singular crack tip elements and other crack linear elements, the boundary element formulas of the torsion rigidity and stress intensity factors were given.
利用裂纹尖端的奇异元和线性元插值模型，给出了扭转刚度和应力强度因子的边界元计算公式。
Using the interpolation models for both singular crack tip elements and other crack linear elements, the boundary element formulas of the torsion rigidity and stress intensity factors were given.
利用裂纹尖端的奇异元和线性元插值模型，给出了扭转刚度和应力强度因子的边界元计算公式。
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