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波偏振
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  wave polarization
     Sn Wave Polarization in Sichuan Region
     四川地区Sn波偏振
短句来源
     In accordance with the orientation, northeast and north—northeast, of principal compressive stress in North China, the dominant orientation of the fast S—wave polarization is northeast before the earthquake.
     震前快S波偏振优势取向为北东向,符合华北地区主压应力方向为北东向和北北东向的特征。
短句来源
     For the work of preseismic prediction and rapid postseismic trend judgement of moderate earthquakes can be done well,the distribution of stress field and the characteristics of moderate earthquake activity in the Urumqi region are synthetically studied by using the focal mechanism solution of moderate earthquakes,mean focal mechanism solution of minor earthquakes and P wave polarization direction.
     为了做好中强地震的震前预报和震后趋势快速判定工作,利用乌鲁木齐地区中强震震源机制解、小震平均震源机制解以及S波偏振方向综合研究了该区域应力场的分布和中强地震的活动特征。
短句来源
     P wave polarization tomography is an invesion method that uses teleseismic P wave polarization data to obtain velocity structure.
     论述了P波偏振层析成像方法 .
短句来源
     The Sn wave polarization data that consists from about fifty earthquakes (ML3. 0 ML4.0) recorded by the telemetric seismic network of Chengdu from 1994 to 1995 are processed for the research purpose of anisotropy of crustal meduim in Sichuan region. The resultshows that the Sn wave polarization which have exact arrival time from all directions is consistent. The superior direction of Sn wave polarization is parallel to the direction of max horizontal stress obtained from other method.
     本文分析了1994年、1995年成都遥测地震台网实时处理系统记录的50多个ML3.0~4.0级地震的Sn波偏振,研究这一地区地壳介质的各向异性.结果表明,在短周期三分向地震图上,对来自不同传播方向的,有可靠到时的Sn波偏振是一致的,其优势取向与其它方法观测的这一地区最大水平主压应力方向相同。
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  “波偏振”译为未确定词的双语例句
     ③ The polarization direction of the fast split S-wave is mostly in the range of N140°E~N164°E, the average is N152.4°E.
     ③快波偏振方向大部份在N140°E~N16 4°E范围 ,平均值为N15 2 4°E ;
短句来源
     to generate WD record 0f the optimal downgoing wave energy by projectingthe three-component data in direct P-wave polarization direction to create Wu record of the optimal upgoing P-wave energy by projecting inthe polarization direction of upgoing P-wave.
     (3)用三分量资料的直达P波垂直分量和合成后的水平分量振幅比先求出直达P波的入射角,然后把三分量资料向直达P波偏损方向投影求得最佳下行波能量的WD记录,向上行P波偏振方向投影求得最佳上行P波能量的记录WU。
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
     P-WAVE POLARIZATION TOMOGRAPHY
     P波偏振层析成像
短句来源
     We applied the methods of correlation and reconstruction to the S wave data observed at 8 stations in China mainland and calculated the delay time and fast polarization of the S wave splitting. The relationship between the splitting parameters and the substance movement in upper mantle of China mainland has been analyzed.
     本文利用中国大陆区共 8个台站所观测到地震事件的S波数据 ,采用相关分析的手段以及对观测数据重建的技术 ,进行了S波分裂参数—快慢波延迟时间与快波偏振方向的计算 ,并分析了S波分裂参数与中国陆区上地幔物质运动的相互关系 .
短句来源
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  相似匹配句对
     P-WAVE POLARIZATION TOMOGRAPHY
     P偏振层析成像
短句来源
     PRECURSORY EARTHQUAKE SWARM AND THE POLARIZATION OF S-WAVE
     前兆震群和S偏振
短句来源
     The Polarization of Light in the Rainbows
     虹霓的偏振
短句来源
     AN ELECTRIC WAVE-ANALYZER
     谱分析仪
短句来源
     Showing- Colour Polarization
     显色偏振
短句来源
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  wave polarization
The measurement of the phase velocities of shear waves as functions of the wave polarization is suggested as a method for the determination of the fiber orientation in a composite material.
      
The possible control of nonlinear interactions with the use of degenerate-wave polarization in optics and acoustooptics is also discussed.
      
We study theoretically the dependence of absorption by small metallic particles on particle shape and wave polarization in the IR frequency range.
      
We also show that the total absorption and the electric-to-magnetic absorption ratio are strongly dependent on particle shape and wave polarization.
      
On the change in electromagnetic wave polarization in a smooth one-dimensionally inhomogeneous medium
      
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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.

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.

Experimental results of second and third harmonic generation in an aluminium crystal of high purity due to the interaction between the ultrasonic shear waves and dislocations under rather small bias stress are reported in this paper. Shear waves at a frequency of 4. 83 MH_z have been propagated along the〈100〉axis, with the polarization in the〈010〉axis,of the sample examined. Up to a stress of 3.2×10~6 dyn·cm~(-2) the second harmonic amplitude showed increase to a maximum, but on the other hand the third harmonic,...

Experimental results of second and third harmonic generation in an aluminium crystal of high purity due to the interaction between the ultrasonic shear waves and dislocations under rather small bias stress are reported in this paper. Shear waves at a frequency of 4. 83 MH_z have been propagated along the〈100〉axis, with the polarization in the〈010〉axis,of the sample examined. Up to a stress of 3.2×10~6 dyn·cm~(-2) the second harmonic amplitude showed increase to a maximum, but on the other hand the third harmonic, a tendency of gradual decrease. The variation of the fundamental wave at-tenuation with the external bias stress and the influence of the fundamental wave amplitude on the second and third harmonics have also been observed. The theoretical explanation of the experimental results is given and some further work concerned is suggested.

本文报导了对金属单晶样品作用小的偏置应力时由于超声切变波与位错相互作用而产生的二次谐波和三次谐波的实验结果。实验中,频率为4.83 MH_Z的切变波沿高纯度铝单晶的〈100〉方向传播,而波的偏振方向沿〈010〉轴。当样品上的偏置外应力增加到3.2×10~6达因/厘米~2时,二次谐波振幅逐渐增加,并达到最大值,而三次谐波振幅不断减小。我们也测量了基波衰减随外应力的变化及二次谐波、三次谐波与基波振幅的关系,对二次谐波随外应力变化的温度效应也作了研究。理论上对实验现象作了解释。

 
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