natural period

The second Chapter is the Han River basin in Xia and Shang period cultural background analysis, including two aspects of natural geographical environment and cultural environment.

第二章为汉水流域夏商时期文化背景分析，包括自然地理环境和人文环境两个方面。

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Study on the influence of the infilled walls for the steel staggered truss structure about natural period and modal of vibration based on many analysis models.

通过对多个结构模型进行模态分析，研究了填充墙对钢交错桁架结构的自振周期及振型的影响。

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A Random Fuzzy Statistical Method of the Structural Natural Period

结构自振周期的模糊随机统计方法

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A simple method for calculating the natural period of multistory frame structures

多层框架结构自振周期一种简便计算方法&相当刚度相当质量法

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The performance of the controller depends mainly on natural period of ship roll motion and non-dimensional roll damping coefficient.

控制器的性能对船舶自然横摇周期和无因次横摇衰减系数有着很大的依赖关系。

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Determination of Reasonable Natural Period of High-Rise Building in Seismic Design

高层建筑抗震设计中适宜自振周期的确定

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A period of depression can be a perfectly natural response to certain aspects of life.

某段时间感到抑郁可能是对生活某些方面很正常的反应。

《柯林斯高阶英汉双解学习词典》

The Natural Period of Motions of FPSO in Shallow Water

浅水浮式生产储油轮运动固有周期特性

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Finally, the period of abundant natural resources and falling prices is over.

最后，自然资源充裕且价格不断下跌的时代已经终结。

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The approximate calculation method on fundamental natural period of vibration for multistorey and high-rise steel frame structure of flexible connection

柔性连接多高层钢框架结构的基本自振周期近似计算方法

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It is pointed out that birth pulses provide a natural period or cyclicity that makes the dynamic behaviors more complicated.

这说明生育脉冲能使系统出现各种周期震荡，使系统的动力学行为变得非常复杂。

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The calculation of the structural fundamental natural period is the critical problems of and-seismic calculation.

结构的基本自振周期的计算是抗震计算的关键问题之一。

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Calculation of Natural Period in Longitudinal Direction of Single-Storey Multiple-Span Factory Buildings

多跨等高单层厂房纵向结构基本自振周期的计算

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The results show that, compared to natural period, contributions of climate change and human activities on runoff change calculated by the two methods are consistent.

结果表明：相对于天然阶段，在整个人类活动影响阶段，两种计算方法得到的气候变化与人类活动对径流影响的贡献量在大部分流域取得了比较一致的结果。

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Traditional base isolation is realized by adding base isolation systems between the structure and foundation. The principle is to lengthen the natural period of the structure.

传统的基础隔震建筑通过在结构底部和基础之间增加隔震体系达到隔震效果，其原理在于延长结构自振周期。

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The Application of Cumulate Method in Determination of the Building Structure Natural Period Experimental Formula

累积法在确定建筑结构自振周期中的应用

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The discussion for variety of structure's natural period in simulant FEA

有限元仿真分析中的结构周期差异探讨

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It is important to select reasonable natural period of high-rise building in seismic design.

设计地震区的高层建筑时，选择结构的适宜自振周期是十分重要的。

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The experiment's results indicate that FPS is an effective isolated device which can length the natural period and reduce the earthquake effect on upper structure.

试验结果分析表明：FPS摩擦摆隔震装置能够有效地延长上部建筑物的自振周期，减少地震作用对上部结构的影响，隔震效果明显，不失为一种有效的隔震装置。

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Methods Use ultrasound B to observe ova developement of 70 patient's 72 natural period and 50 drug ovulation period.

方法利用B超对70例不孕患者的72个自然周期及50个药物促排卵周期的卵泡发育情况进行观察。

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According to axially natural period, the relation of the dynamic magnification factor vs the linearly loading time under linearly loading is deduced and presented.

推导并给出了轴向固有周期下线性加载动力放大系数随线性加载时间的变化关系。

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Dynamic Optimal Design to Limit Natural Period of Tall Reinforced Concrete Buildings

考虑自振周期的高层混凝土建筑结构动力优化设计

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Determination of Fundamental Natural Period of Multistory Frame by Using Moveable Method of Concentrated Mass

用集中质量迁移法求多层框架的基本自振周期

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During natural dormancy period, POD activity kept an increase continually, and also had a high level when dormancy is being broken.

自然休眠期间POD活性一直呈上升状态，休眠解除后仍然保持较高水平。

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By presenting the air buoyancy decreasing coefficient and referring to tests, the natural period of heaving and some dynamic properties are discussed.

引进气浮力折减系数并结合试验，对气浮结构的动力学特性进行了分析；

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Study on the relation of predominant period of site and natural period of structure

场地卓越周期与结构基本周期关系研究

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Natural period of vibration and parameters analysis for an opera house studio

某歌剧院演播厅自振特性及参数分析

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Study on natural period of homogeneous rock slope and its estimation method

均质岩石边坡自振周期及其估算方法研究

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In group A, when the eggs ripe in natural period, IUI was used.

A组为自然周期的卵泡成熟后采用IUI治疗；

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Empirical Formulas of Natural Period of Vibration for Highrise Steel Structures

高层钢结构基本周期的经验公式

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