The finite element method is used to study the internal stress distribution condition of the KE495 engine crankshaft, then the unreasonable design of the original crankshaft is known.
利用有限元法分析KE495发动机曲轴的内部应力分布状态，得出原曲轴结构的不合理之处。
By means of original parameter method, the stress on cylinder's winding area is analyzed, formula for total stress of the cylinder is obtained.
采用初参数法对贴板钢丝缠绕区筒体应力进行了分析，得到筒体总应力表达式。
This method not only can simplify the original proof, stress its intrinsic quality but also get the new conclusion for the finite simple group.
用这种方法，不但简化了证明过程，突出了问题的本质，还可以得出有限单群的新结论。
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