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偏振
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  polarization
    POLARIZATION CHARACTERISTICS OF PS-CONVERTED WAVE FROM INCLINED INTERFACE AND THEIR APPLICATION TO METHOD OF DEEP SOUNDING BY CONVERTED WAVE
    在倾斜界面情况下PS转换波偏振特征及其在转换波测深中的应用
短句来源
    Polarization projection method and its application to VSP data,
    偏振投影法及其在VSP中的应用
短句来源
    S-WAVE POLARIZATION OF LANCANG-GENGMA EARTHQUAKE
    澜沧—耿马地震的S波偏振
短句来源
    S-WAVE POLARIZATION AND VARIATION CHARACTERISTICS OF AMPLITUDE RATIO OF P-AND S-WAVES FOR THE LANCANG-GENGMA EARTHQUAKE
    澜沧-耿马地震的S波偏振及P波、S波振幅比变化特征
短句来源
    POLARIZATION ANALYSIS AND ITS APPLICATION IN SURFACE WAVE STUDIES
    偏振分析程序POLALYS在面波研究中的应用
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  “偏振”译为未确定词的双语例句
    Quantitative measurements of shear wave polarizations at the Anza seismic network,Southern California:implications for shear wave splitting and earthquake prediction
    加州南部安扎地震台网剪切波偏振的定量测量:剪切波分裂与地震预测之间的关系
短句来源
    In this paper the methods of analysis of the principal direction of the displacement and polorization filtration are used for recognition of the PS converted waves.
    本文介绍将位移主方向分析法和偏振滤波法应用于PS转换波震相的分析。
短句来源
    By using particle motion method, the direction of fast shear wave was found 22°N±19°E, while the delay time between the fast and slow shear waves was obtained to be (65±16) ms.
    通过质点运动的方法得出 :快横波的偏振方向为 2 2°N± 19°E ; 且快、慢横波的延时之差为 6 5± 16ms .
短句来源
    By aspect ratio method, the direction of fast shear wave was determined to be 35°N±18°E and the delay time between fast and slow shear waves was found to be (49±10) ms.
    用纵横比的方法得到的结果为 :快横波的偏振方向 35°N± 18°E ,且快、慢横波的延时之差为 (4 9± 10 )ms .
短句来源
    The results show that dominant directions of polarizations of fast shear-waves at most stations are mainly at nearly N-S or NNW direction in Yunnan.
    结果表明,云南地区大部分台站的快剪切波偏振优势方向主要为近N—S或NNW方向;
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  polarization
In the interesting case when the group is of Coxeter typeDn (n≥4) we use higher polarization operators introduced by Wallach.
      
When the characteristic of k is 0, it is known that the invariants of d vectors, d ≥ n, are obtained from those of n vectors by polarization.
      
From elements of the invariant algebra C[V]G we obtain, by polarization, elements of C[kV]G, where k ≥ 1 and kV denotes the direct sum of k copies of V.
      
The remanent polarization (Pr) and coercive electric field (Ec) of the measured PZT thin films are 47.7 μC/cm2 and 18 kV/cm, respectively.
      
Impact of polarization mode dispersion and nonlinear effect on 40 Gbit/s dense wavelength division multiplexing system
      
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This is a continuation of a previous paper (page 24, this volume). A simple graphical solution of the direction of dislocation at the focus is given. The material used is the angle β of the S-waves obtained at two stations. The effect of epicentral distance on the angle β and the correction thereof are discussed.

本文对求震源地方错动的方向提出了一个极简单的图解方法.所用的资料是两个台上的横波偏振角β.并讨论了在某些震中距离上对β角进行校正的问题.

When P waves from distant earthquakes meet a velocity discontinuity in the earth's crust and upper mantle, they give rise to a series of converted PS waves besides PP refracted waves. The difference of arrival times between such PS and PP waves can be used to determine the structures in the earth's crust and upper mantle.For the first time, method converted waves from distant earthquakes have been tried in the Shiahjin-Gautarng (夏津-高唐) region of western Shandung, Province and in the Changpirng (昌平) area west...

When P waves from distant earthquakes meet a velocity discontinuity in the earth's crust and upper mantle, they give rise to a series of converted PS waves besides PP refracted waves. The difference of arrival times between such PS and PP waves can be used to determine the structures in the earth's crust and upper mantle.For the first time, method converted waves from distant earthquakes have been tried in the Shiahjin-Gautarng (夏津-高唐) region of western Shandung, Province and in the Changpirng (昌平) area west of Peking.Polarization filtering was employed to analyze the seismic data in order to increase the reliability in identifying the PS phases. As a result, the crustal structures in these two regions have been found and it is indicated that the main deep discontinuities thus obtained are essentially the same as those determined by deep seismic sounding experiments using explosions.

当远震P波通过地壳、上地幔速度界面时,除了产生PP型折射波,还产生一系列PS型折射转换波.这类PS转换波与初至P波之间的到时差,可用来测定地壳和上地幔构造. 转换波测深法首次在我国鲁西夏津—高唐地区和京西昌平地区进行了试验应用.为提高转换波震相识别的可靠性,在资料分析中采用了偏振滤波的方法.工作结果获得了上述两地区的深部构造剖面图.转换波法与爆炸地震法所得结果之对比表明,两者的主要界面基本一致.

The activities of swarms of small earthquakes before the Haicheng earthquake were obviously precursory earthquake swarms. They played an important role in the prediction of the Haicheng Earthquake. Many other violent earthquakes sofar occurred in China, similar to the Haicheng earthquake, also had precursory earthquake swarms. The preliminary results obtained from the study of the precursory earthquake swarms by using the data of S-wave show that the polarization properties of S-wave were quite stationary.

海城地震前的小震群活动构成了显著的前兆震群,并在预报这次地震中起到了一定的作用.其他许多中国的大地震象海城地震一样,也有类似的前兆震群.我们利用 S 波资料研究这些前兆震群的初步结果表明,它们的 S 波偏振性质是相当稳定的.

 
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