Study on random fluctuation characteristics of amplitude spectra of strong ground motion

Generally speaking, the characteristics of ground motion can be described by its three elements, namely, the amplitude of ground motion, spectrum and duration.

一般认为，对工程抗震而言，地震动的特性可以通过其三要素来描述，即地震动的振幅，频谱和持时。

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In the constant load and live load under the action of shear pin, and the circumferential weld will withstand high amplitude of cyclic stress, the strength and fatigue problem should cause height to take seriously.

在恒载和活载的作用下，剪力销以及其周边焊缝将承受幅值较高的应力循环，其强度和疲劳问题应引起高度重视。

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The velocity of the vehicles has a little influence on the stress and the deflection in pavement and subgrade but rather significantly on the amplitude of fluctuating stress and deflection;

车辆速度的增加使路基路面的应力和弯沉有一定的减小，但是应力和弯沉的波动幅度随车速的增加而增大；

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It is easily to form crack initiation in the interface between substrate and cladding layer, for the amplitude of tension stress is larger in Z direction.

Z方向的拉应力幅值较大，易在熔覆层与基体的界面处形成裂纹源；X方向的拉应力远大于Y方向的拉应力，使裂纹大多垂直于扫描方向。

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The amplitude of crack-tip stress field decreases when the coefficient of hardening becomes bigger, and increases when viscosity increases.

裂尖场应力和塑性应变幅值随材料硬化增强而减小，随粘性增强而增大。

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Furthermore, under the same loading waveform the crack initiation life increases as the amplitude of applied stress decreases.

而且，降低正弦波加载时的应力幅值可大大提高夹杂物/基体界面疲劳裂纹的萌生寿命。

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The parameter has a significant effect on the amplitude of hoop stress.

饱和土参数对土体应力的幅值有明显的影响；

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With the same incident pulses, the amplitude of stress wave was attenuated seriously when it traveled through the rough fractal joint compared with the smooth plane joint. The deformation of a rough fractal joint was found to be larger than that of a smooth plane joint.

在相同入射波条件下，粗糙节理岩样的应力波衰减程度大于平直光滑节理岩样的衰减程度，粗糙节理的实际变形大于平直节理的变形。

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The failure pattern of rock specimen subjected to dynamic loading is similar to that under static loading when the amplitude of stress wave is relatively low.

数值模拟表明：应力峰值较小时，试样的破裂模式与静态载荷作用下的破裂模式相似；

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For soils with double-drainage boundaries, the amplitude of stress near the surfaces is greater and lag time is less.

对于双面排水地基，靠近土层上下表面处应力振荡幅值较大，滞后时间较小；

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Influence of patients with hypokalemia on their amplitude of vibration of QRS wave in electrocardiogram

低血钾对QRS波振幅的影响

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Effect of Diffraction Halo on the Accuracy of Measurement of the Amplitude of Vibration by Laser Speckle

衍射晕对散斑测振精度的影响

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With the test amplitude of vibration, the actual impact factor of pulley drive is determined.

并用测试振幅来确定皮带的实际冲击系数；

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Three samples weres separately welded in various frequency and amplitude of vibration.

选取三组试样分别在不同振动频率和振幅的条件下，进行振动焊接。

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The frequency and amplitude of vibration system of laminated plate and shell is affected by various factors.

复合材料层合板壳振动系统的频率、振幅受各种因素影响。

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The influence of magnetic intensity on the period and the amplitude of vibration is discussed.

通过算例，分析了磁场环境对振动周期和幅值的影响。

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The results of simulation calculation indicate that the amplitude of vibration is reduced.

模拟计算结果表明减振效果明显。

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The frequency and amplitude of vibration are monitored.

振动的频率与振幅受到监控。

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Theoretical analysis of complex amplitude of vibration for multi-photon optical Instability

多光子光学双稳性的复振幅解析分析

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With the adaptive multiple plane reconstruction AMPR in SOMATOM Sensation 16, cone beam artifacts were effectively suppressed, while new spiral concept were created: free selection of spiral pitch according to the clinical needs of an examination, slice width independent of the pitch;

采用适应性倾斜多层平面重建AMPR技术，锥形束伪影得以有效消除，而且在充分利用扫描剂量的同时，可以根据临床需要自由选择螺距；

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