工程结构抗震分析 第三阶段(20世纪70年代至今) 动力理论阶段(Time History Method) 动力抗震设计理论具有如下特点: (1)输入地震动参数需要给出符合场地情况、具有概率意义的加速 度过程,对于复杂结构要求给出地震...
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桩基的水平动力特性已受到工程界越来越普遍的重视，但关于水平动力受荷桩的理论和性状至今仍处于研究阶段。
The horizontal dynamic behavior of pile foundation is becoming more and more attractive in geotechnical engineering. But the theory concerned with this is still in research stage.
采用计算流体动力学(CFD)技术实现在船舶设计阶段对船舶水动力性能的精确预报，是船舶水动力学学科中一个具有重大理论和实用意义的、富有挑战性的课题。
Numerical prediction of ship hydrodynamic performance at design stage using computational fluid dynamics (CFD) technique is a most important and challenging subject in the field of ship hydrodynamics.
按照混沌理论的观点，人的心理的本质是非线性的，而心理的混沌状态则是导致更高阶段有序结构出现的动力学基础。
Relying on the science of chaos theory, the essence of human mind is nonlinear, and the chaotic mental status is a dynamical foundation which can bring about more advanced orderly structure.
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