A method of opening force analytical model was brought forward to solve the dynamic response analysis to pressure perturbation under the steady status.
提出了一种“开启力解析模型”的方法来求解稳态下密封性能对压力扰动的动态响应。
Using the second order perturbation theory, the formulae of vibrational force constants are derived in part one.
运用二阶微扰理论，本文第一部分首先计算了高阶力常数的表达式。
Atmospheric drag is the main perturbation force on a low earth orbit satellite and is closely related to the variation of high atmospheric density.
大气阻力是低轨卫星主要的摄动力，与高层大气密度的变化密切相关。
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