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- LIANG Jian-wen, Yan Lin-jun, Lee V W.Scattering of incident plane P waves by a circular-arc canyon with a covering layer[J].Acta Mechanica Solida Sinica, 2002, 23(4): 397-411. [2]梁建文; 严林隽; Lee V W.;圆弧形凹陷地形表面覆盖层对入射平面P波的影响[J]
- A series solution for surface motion amplification due to underground group cavities for incident plane P waves is derived by Fourier Bessel series expansion method. 采用波函数展开法,给出了平面P波入射下半空间中洞室群对地面运动影响问题的一个级数解答。
- The scattering and diffraction of plane P waves by circular-are alluvial valleys with water is studied in this paper.The Fourier-Bessel series expansion technique is used to solve this problem. 摘要利用波函数展开法,在频域内给出了圆弧形充水河谷对平面P波散射问题的解析。
- plane P waves 平面P波
- Plane P wave 平面P波
- A series solution for the effects of an underground circular lined tunnel on ground motion under incident plane P and SV waves is presented using the wave expansion method. 利用波函数展开法,给出了地下圆形衬砌隧道对入射平面P波和SV波散射问题的一个级数解答,当衬砌与半空间介质相同时,该解答退化为文献中的无衬砌隧道的解答。
- Seismic surveying is largely concerned with the primary P waves. 地震勘探主要研究一次纵波。
- Plane P, Q tangent on the sphere S, point M on P, and N on Q. What's the distance of PQ? 说在一个长方形盒子外面贴一英寸厚的泡沫,给出长方形三条边为24,20,10,问泡沫体积.
- C VSP logging data contains plenty of information about seismic waves such as P waves and converted S waves. VSP三分量测井记录含有丰富的地震波场信息 ,除纵波外还有转换横波资料。
- AVO phenomenon of seismic reflection waves can be seen in both P wave andP-SV wave. 地震反射波振幅随炮检距变化的规律(AVO)不仅P波存在,而且P-SV波也同样具有AVO特征。
- Amplification of P waves by flexible space is analyzed by exact dynamic-stiffness matrix of soil and half-space in frequency domain. 利用土层和半空间的精确动力刚度矩阵,在频域内求解并分析了弹性半空间场地对P波的放大效应。
- It established a new method to exhibit the phenomena of EMV through beat-to-beat analysis of the morphological changes of P waves, QRS waves and T waves. 建立了识别心电形态差异的新算法,克服了经典相关系数法识别灵敏度不高的弱点,明显提高了心电波形差异的检测灵敏度。
- Objective To study the relation between P wave dispersion, P wave width and paroxysmal atrial fibrillation. 目的研究心电图P波离散度、P波宽度与阵发性心房纤颤的关系。
- The plane climbed until it was clear of the clouds. 飞机爬升穿出了云层。
- The P wave, or compressional wave, alternately compresses and expands material in the same direction it is traveling. 波,或称压缩波,在其传播过程中在同一方向交替压缩和拉伸介质(见上图)。
- The flier is flying a new-type jet plane on trial. 飞行员正在驾驶一架新式喷气机作试验飞行。
- Conclusion P wave maximum width or P wave dispersion is a dependable sign to predic... 结论P波离散度、P波最大宽度为一种预测阵发性心房纤颤的可靠指标。
- About characteristics of P wave on ECGs these students were closer ordinarily healthy people than athletes. 以上现象男生较女生明显,体育专业学生的P波比运动员接近一般正常人。
- Conclusion ECG P wave amplitude changes are a useful standard in evaluating hyperthyroidism therapy. 结论心电图P波振幅的变化可以作为评价疗效的指标。
- The landscape unrolled under the speeding plane. 大自然的景色展现在快速飞行的飞机之下。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries