Based on energy theory, a simple critical force calculation for pressed beam with variable cross sections is derived. It reduces the complex integration algorithm into a simple algebraic operation.
以能量原理为基础，推导出变截面压杆计算临界力的简便方法，把复杂的积分运算归结为一个简单的代数运算。
The method is straight-forward and efficient, since it reduces the nonstationary response problem to complex algebraic operations only.
方法简便实用，它将非平稳随机响应问题归结为复代数运算。
This Paper investigates the characteristic estimation of meromorphic solutions of a class of systems of complex algebraic differential equations.
本文给出了一类复代数微分程组亚纯解的特征估计。
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