Itis also discussed the effect of sample purification and operating conditions and the randomdeviation of measurement.
还叙述了样品净化与操作条件对测量值的影响及测量的随机误差。
2
Based on discrete random vibration theory, recursive square equations to calculate the mean and standard deviation of response are developed.
在此基础上采用随机振动的离散分析理论,推导出结构响应均值和方差的递推式。
3
Based on the assumption of random installation deviation, the finite element met hod analyzing the initial displacement and stress of grid structures was set up.