... long focus lens长焦距透镜 long period structure长周期结构 long range force长程力 ...
基于16个网页-相关网页
...长周期结构； 动力特性 [gap=1187]Keywords： transient response; Hilbert-Huang transform; chimney; long-periodic structure; dynamic properties ...
基于4个网页-相关网页
In HREM characterization of the stacking faults and very thin matensitic plates, long period stacking structures that were formed by periodically overlapped (111) planes of austenite, were discovered the stacking sequence of which is ABCABABCAB…….
介绍了HREM表征的基本方法,并对Fe-Mn-Si中的层错和极薄片的ε马氏体进行了表征,发现了由于层错在奥氏体相(111)面周期性的出现而形成的长周期结构,这种结构为ABCABABCAB……。
参考来源 - C、N元素对Fe·2,447,543篇论文数据，部分数据来源于NoteExpress
而长周期结构采用规范设计反应谱或由地震危险性分析给出的场地设计反应谱计算所得的地震反应结果偏大。
The seismic response of the structure with long period will be over estimated, if the standard spectrum or the design spectrum given by seismic risk analysis is applied.
研究结果表明：在简谐地面加速度作用下，高频地震动也可以引起长周期结构产生很大的位移反应，且最大位移反应出现在结构的瞬态自由振动阶段。
It is concluded that the transient response to a high frequency harmonic ground motion can increase greatly the displacement response of structures, particularly for the long period structures.
传统的设计方法存在设计周期长、结构冗余、成本高、缺乏对结果的验证等诸多弊端。
There are many problems in traditional design method such as long period, structure redundancy, high cost and lack of validation etc.
应用推荐