对交错钢桁架结构的侧移分析，采用连续化的数学模型和侧向抗剪刚度法。
The analysis of sidesways of staggered steel truss structure is discussed. The mathematical model of an equivalent continum is proposed and solved by the lateral shear rigidity method.
根据胜利油田典型地质模型的构造特点，本文提出了变密度声波方程交错网格高阶差分正演方法。
According to structural feature of typical geologic models in Shengli oilfield, the paper presented staggering mesh high-order difference forward simulation of density-variated acoustic equation.
建立了交错轴斜齿轮啮合分析的数学模型。
The mathematic model is established for analyzing engagement of crossed helical involute gears.
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