地震波

Using maximum coseismic displacement obtained from seismogeological studies and inversions from seismic waves, the recurrence intervals of great earthquakes, such as the 2008 Wenchuan earthquake, can be estimated to be 2000 ~6000 years.

利用地震地质考察和地震波反演得到的最大同震位移可以获得相当于5.12汶川大地震的强震复发周期为2000～6000年。

Using maximum coseismic displacement obtained from seismogeological studies and inversions from seismic waves, the recurrence intervals of great earthquakes, such as the 2008 Wenchuan earthquake, can be estimated to be 2000~6000 years.

利用地震地质考察和地震波反演得到的最大同震位移可以获得相当于5.12汉川大地震的强震复发周期为2000~6000年。

By using of finite element analysis software ANSYS and taking the power transmission line crossing over the Pearl River as the background of research, under the condition that the viscous-damper energy dissipater and Tuned Mass Damper are arranged or not on the transmission tower, the displacement and the acceleration of the tower are compared and analyzed under the three-dimensional earthquake waves.

利用有限元分析软件ANSYS，以跨越珠江的输电线路工程为研究背景，在输电塔上布置粘滞消能阻尼器和调谐质量阻尼器(tuned mass damper，TMD)，对比分析了在三向El-Centro地震波作用下有、无减震控制措施的输电塔位移和加速度地震响应。

The parameters of Clough-Penzien spectrum related to incident direction, site conditions, intensity, and epicentral distance, were given.

本文还从工程抗震设计的实用角度出发，给出了基于Clough-Penzien谱的与地震波入射方向、场地条件、地震烈度和震中距有关的平稳谱参数取值。

In fractural area, because the elasticity is heterogeneity, seismic wave absorbed and scattering, the seismic record is more complex. Thus, the Hurst exponent in fractural area is less than in non-fractural one.

在裂缝发育区段，由于地层介质弹性的非均质性及地震波的散射、吸收等使得地震反射序列变得更为复杂，这样，裂缝发育区地震信号的赫斯特指数小于非裂缝发育区。

Then construction dissipates energy in form of damping energy and hysteretic dissipated energy.

在地震中，结构吸收地震波输入的能量，并以阻尼耗能和滞回耗能的形式消耗能量。

The spatial variation of seismic ground motions include the influences of the three factors of geometric incoherency effect,wave-passage effect,and local site effect.

引起地震动空间变化的原因主要是由地震波传播时的行波效应、相干效应、衰减效应和场地效应引起。

The results indicate that the damping effectiveness of the maximal interlaminar displacement angle is more obvious as the numbers of dam...

结果表明，层间最大角位移的减震效果随着阻尼器数量的增加而明显，层间最大剪力的减震效果依赖于输入地震波。

Based on the construction of Jieyang section in Shantou-Jieyang Expressway,a test research on processing of mutual sub-grade for reinforced bag sand well is carried on by selecting a section of soft soil and liquefiable sandy soil mutual sub-grade processing project,and the monitoring is conducted by use of multiple means such as original position tests including sedimentation and SPT tests,etc.

依托汕揭高速公路揭阳段的建设，对其中一段软土与可液化砂层互层地基处理工程进行加强型袋装砂井处理互层地基的试验研究，并利用沉降、标贯试验等原位测试及地震波测试等多种手段进行监测。

First, based on the analogy of the mathematical expressionbetween the propa gation of EM wave and that of seismic wavein a horizontal stratified earth, the re flectivity and transmissionformulation for EM plane wave propagating incident nor malto the layers are derived, the formulation with relation to pseudo-impulse is discussed and pseudo-impulse response is compared with impulse response of re flection seismology.

作者首先基于电磁波与地震波在水平层状介质中传播特征在数学形式上的相似性，推导了垂直入射平面电磁波在层间反射与透射传播函数，并讨论了它们与伪脉冲的关系，与反射地震学中脉冲响应作了对比。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。