本文探讨非平稳随机动载荷作用下的拖拉机传动系统的安全性问题。
Safety of the tractor transmission excited by non-stationary random dynamic load is explored.
本文利用有限元方法，分析了平面刚架结构对地震载荷的随机动力响应问题。
Stochastic dynamic responses of planar rigid-frame structures to quake loads are investigated by using the finite element approach.
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