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A kind of wavelet-pack de-noising treatment method is proposed so as to reduce the high frequency interference and simplify the extraction of the earthquake wave effective characteristic vector. 提出一种小波包降噪的处理方法,用以降低高频噪声干扰和简化地震波有效特征向量提取。
earthquake wave effect 地震波效应
Taking the dam foundation grouting test effect of the Daliuhe WRPP as an example, the author mainly introduced the application and effect of the earthquake wave CT technology. 以大柳树水利枢纽坝基灌浆试验效果检测为工程实例,重点介绍地震波CT技术的应用和效果。
Taking the dam foundation grouting test effect of the Daliuhe WRPP as an example,the author mainly introduced the application and effect of the earthquake wave CT technology. 以大柳树水利枢纽坝基灌浆试验效果检测为工程实例，重点介绍地震波CT技术的应用和效果。
The wave effects are not peculiar to electrons. 波的效应不是电子独有的。
Strong earthquake wave, it go the rounds whole earth according to imperceptible speed and method. 强大的地震波，以人们感觉不到的速度和方式传遍整个地球。
That day afternoon, the earthquake wave of southwesterly direction affects quickly the countrywide other area that includes Beijing inside. 那天下午，来自西南方向的震波迅速波及到包括北京在内的全国其他地区。
Compared with classic wavelet technique, the proposed method can adjust not only the low frequency components of earthquake wave, but also the high frequency components. 和传统的小波分析相比，该方法不仅对地震波低频分量进行精确调整，还可对其高频成分实现类似的调整。
This article expounds a method for calculation of the water wave effect on aerodynamics of a three-dimensional vehicle flying close to water surface. 本文以边界元法为基础,在线性水波的假定下,对贴近水面飞行的三维飞行器,提出了一种计算气动力中水波效应的方法。
Through feature studies of earthquake wave dynamic of double-eventsequence, the possibility to distinguish foreshocks of second main shock hasbeen proposed in this paper. 本文通过对双震型地震序列的地震波动力学特征的研究，提出了识别双震中第二主震前震的可能性。
This paper studied amplitued and decay law of earthquake wave, Contribution in reducing vibration and application of frequency in safe criterion of detonate vibration. 本文通过大量分析，认识爆破地震波的振动幅值与频率组成的衰减规律、频率在降震中的作用，及其作为爆破振动的安全判据。
The transfer of earthquake wave in ground soil is related to soil characteristic, excitation magnitude, etc.. It is not always amplificatory, but likely to be filter and isolation. 表明地基土层对地震动的影响与场地土特性、地震动大小等有关，不一定是放大作用，也可能起滤波和隔震作用。
Seismic traveling wave effect can severely influence the seismic responses of un-control, semi-active control and active control of long span rigid-continuous bridge in lognitudinal and transverse direction. 地震行波效应会对大跨刚构-连续桥梁纵桥向与横桥向的无控制、半主动控制和主动控制地震反应产生严重影响，它对桥梁的主梁和桥墩均会产生不利影响，而不是只对主梁产生不利影响。
Through analyzing the data of a series of shaking table tests of dynamic soil-structure interaction (SSI) system with soft to hard soils, the transfer of earthquake wave in various ground soils is in vestigated. 摘要通过对地基土质从软到硬的三个阶段结构－地基动力相互作用体系振动台模型试验所取得数据的对比分析，讨论了不同土性地基对地震波传递的影响。
Multi-span continuous bridges have large extended length longitudinally,the more rational method for seismic response analysis should be performed considering the traveling wave effect. 多跨连续梁桥纵向延伸长度比较长,进行地震反应分析时应考虑地震波有限波速传播所引起的行波效应。
Three man-made earthquake waves are composed with the exceedance probability of 10% and 3%. 3．根据相关资料合成了100年超越概率为10%25和3%25的各三条人工地震波。
Multi-span continuous bridges have large extended length longitudinally, the more rational method for seismic response analysis should be performed considering the traveling wave effect. 多跨连续梁桥纵向延伸长度比较长，进行地震反应分析时应考虑地震波有限波速传播所引起的行波效应。
This system realizes the collection,transmission and data processing of earthquake wave signal by means of delta modulation,frequency-shifting keying,frequency-division multiplexing technologies. 采用增量调制、移频键控、频分复用等技术实现地震波信号的采集、传输和数据处理.;其电路结构简单;工作可靠;信噪比高;抗干扰能力强;测量精
Except this, we found that the average results of structure under three earthquake waves are dower with the results of spectrum analysis. 4.;在对结构进行弹性动力时程分析时，结构在人工波作用下的反应要大于实际波，且三条地震波作用下的平均值与谱分析结论相吻合。
In this paper, based on project excavation of the Wansongling tunnel, the monitoring way and controlling technology of vibration of blasting earthquake wave induced by tunnel excavation were studied. 以万松岭隧道工程开挖为研究对象,对隧道工程开挖施工爆破地震波的振动监测方法及控制技术进行了研究。