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rayleigh
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  瑞利
    Characteristics of Rayleigh wave in fluid-solid media
    流体-固体介质中瑞利波特性
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    THE APPLICATION OF GENETIC ALGORITHM TO RAYLEIGH WAVE INVERSION
    用遗传算法进行瑞利波反演
短句来源
    THE APPLICATION OF RAYLEIGH WAVE METHOD IN ENGINEERING INVESTIGATION
    瑞利波法在工程勘察中的应用
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    A FINITE MODEL FOR RADIATION OF RAYLEIGH WAVE ON LIQUID SOLID INTERFACE
    水平液固界面上瑞利波辐射的有限模型
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    STUDY ON THE EXTRACTION OF EFFECTIVE WAVE USING ANALYTIC SIGNAL METHOD IN MULTICOMPONENT RAYLEIGH WAVE EXPLORATION
    多分量瑞利波勘探用解析信号法提取有效波的研究
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  瑞利面
    THE δ MATRIX METHOD FOR THE DISPERSION FUNCTION COMPUTATION OF AXISYMMETRICAL CYLINDRICAL RAYLEIGH WAVE IN MULTILAYERED MEDIA
    计算层状介质中轴对称柱面瑞利面波频散函数的δ矩阵法
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    PRINCIPLE OF TRANSIENT RAYLEIGH WAVE DETECTING AND ITS APPLICATION
    瞬态瑞利面波技术探测原理及其应用
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    Discussion on feasibility of using Rayleigh wave to investigate near-surface structure.
    利用瑞利面波调查表层结构的可行性探讨
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    Application of Rayleigh wave in geological exploration
    瑞利面波在地质勘察中的应用
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    Dispersion Inversion of Rayleigh Surface Wave in Eurasia Continent and Marginal Seas of West Pacific
    欧亚大陆及西太平洋边缘海瑞利面波频散反演
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  “rayleigh”译为未确定词的双语例句
    A DISCUSSION ON SOME PROBLEMS IN TRANSIENT STATE RAYLEIGH WAVE EXPLORATION
    瞬态瑞雷波勘探中一些问题的讨论
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    TYPES OF D-R CURVE OF CAVERN MEASURED BY STEADY-STATE RAYLEIGH WAVE
    稳态瑞雷波实测洞穴D─R曲线的类型
短句来源
    APPLICATION OF TRANSIENT RAYLEIGH WAVE EXPLORATION TO ENGINEERING GEOLOGICAL SURVEY
    瞬态瑞雷波勘探在工程地质勘测中的应用研究
短句来源
    TOMOGRAPHY OF RAYLEIGH WAVE DISPERSION
    地震面波频散的层析成像
短句来源
    INVERSION OF SHEAR-WAVE VELOCITY STRUCTURE IN SHALLOW SOIL FROM RAYLEIGH WAVES
    利用Rayleigh波反演浅土层的剪切波速度结构
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  rayleigh
Study on the interaction of trypsin with some DNAs and their analytical application by resonance Rayleigh scattering spectra
      
When trypsin reacts with Herring sperm DNA (hsDNA), Salmon sperm DNA (sDNA), and Calf thymus DNA (ctDNA) to form a complex, the resonance Rayleigh scattering (RRS) was remarkably enhanced and new RRS spectra appear.
      
A total of 700 experimental data points were correlated using Rayleigh versus Nusselt number in various forms, based on different independent variables.
      
For the estimation of the natural convection heat transfer under the present conditions, empirical correlations in which Nusselt number is expressed as a function of the Rayleigh number, or both Rayleigh and Prandtl numbers, may be used.
      
This theory confirms main conclusions obtained previously in the Rayleigh-Debye-Hans approximation (Khlebtsov, N.G.
      
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The drag and lift forces are tested on square arrays of model pile groups in subcritical flow. Reynolds numbers in the test range from 3.3×10~3 to 5.6×10~3. The analogous data are digitalized and processed by MDR-z80 microcomputer with ADC. Results show that the mean drag coefficients is reduced as the pile number is increased and as pile spacing is reduced. The flow velocity gradient is taken into account. Both the lift force coefficients and lift force frequencies are analyzed. The lift forces of pile groups...

The drag and lift forces are tested on square arrays of model pile groups in subcritical flow. Reynolds numbers in the test range from 3.3×10~3 to 5.6×10~3. The analogous data are digitalized and processed by MDR-z80 microcomputer with ADC. Results show that the mean drag coefficients is reduced as the pile number is increased and as pile spacing is reduced. The flow velocity gradient is taken into account. Both the lift force coefficients and lift force frequencies are analyzed. The lift forces of pile groups show to be a random process with narrow band spectrum. Extreme lift force agrees well with Rayleigh distribution and lift force period distribution also can be determined by a modified theoretical expression.

本文对亚临界流条件下方阵群桩上的阻力与升力进行了试验研究。在试验条件下,群桩总阻力小于孤立单桩阻力之和,其变化与群桩总桩数,桩距均有关,对于升力,本文认为应视为一随机过程。

In this paper, a linear growth rate for the collisional Rayleigh-Taylor instability in the ionospheric F region of low and mid-latitudes is derived and numerical simulations for certain typical cases conducted. The results show that the growth rate becomes smaller as the latitude increases. In mid-latitudes, it is hard for a pure R-T mode to grow without a proper external horizontal electric field East-Westly directed, in hose latitudes, initial disturbances will soon be stabilized. It is also shown that...

In this paper, a linear growth rate for the collisional Rayleigh-Taylor instability in the ionospheric F region of low and mid-latitudes is derived and numerical simulations for certain typical cases conducted. The results show that the growth rate becomes smaller as the latitude increases. In mid-latitudes, it is hard for a pure R-T mode to grow without a proper external horizontal electric field East-Westly directed, in hose latitudes, initial disturbances will soon be stabilized. It is also shown that although the growth rate of E×B mode driven by the external electric field becomes smaller,, too, as latitude increases, the actual change rate is less than that of the R-T mode. The numerical simulation with non-linear effects included gives out the results that non-linear E×B drift can not make the initial density depletion (bubbles) rising above the F peak in mid-latitude zones, instead, in the lower part of F region, a larger area of electron enhancement can evolve. This is in agree nent with some observational characteristics of the mid-latitude spread-F. It is thought that the collisional R-T instability together with a proper East-West electric field is probably one of the mechanism leading to the development of spread-F in mid-latitudes.

本文导出了中低纬地区电离层F区中的Rayleigh-Taylor不稳定性的线性增长率,并对一些典型情况进行了数值模拟研究.结果表明,Ravleigh-Taylor不稳定性的线性增长率随纬度的增加而降低,在中纬度地区,如果没有合适的东西向水平外电场,纯Rayleiyh-Taylor模难于增长,初始扰动将被稳定化.在这些区域,线性增长率的表达式还表明,外电场导致的E×B模的增长率虽然随纬度的增加而减小,但其减小的速率慢于R-T模增长率的减小.非线性的数值模拟则显示,中纬非线性E×B漂移不能象在赤道地区那样使电子密度减小的区域抬升到F区顶部以上,亦即在中纬地区,F顶部以上通常不出现电离层泡,但在F区较低部分可以演化出较大范围的电子密度增强区,这与中低纬地区Spread-F的某些观测特征一致.这说明Rayleigh-Taylor不稳定性与东向水平外电场一起可以成为导致中纬Spread-F发展的一种机制.

Fundamental properties of Rayleigh-Taylor instability and drift instability in the mid-latitude F region are studied. It is found that neutral wind and electric field have profound influences on the instabilities. The neutral wind is the most important term for driving the Rayleigh-Taylor instability in the mid-latitude even if the ionosphere does not tilt. The growth rate of the Rayleigh-Taylor instability at the mid-latitude is smaller than that in the equatorial F region when there are not...

Fundamental properties of Rayleigh-Taylor instability and drift instability in the mid-latitude F region are studied. It is found that neutral wind and electric field have profound influences on the instabilities. The neutral wind is the most important term for driving the Rayleigh-Taylor instability in the mid-latitude even if the ionosphere does not tilt. The growth rate of the Rayleigh-Taylor instability at the mid-latitude is smaller than that in the equatorial F region when there are not neutral wind and electric field.The ion-neutral collisions can reduce the growth rate of the drift instability. It is shown that the large-scale Rayleigh-Taylor instability is excited more easily in the equatorial ionosphere and the small-scale drift instability dominates at the mid-latitude.

本文研究了中纬电离层Rayleigh-Taylor不稳定性和漂移不稳定性的基本性质.如果不存在中性风和背景电场,中纬Rayleigh-Taylor不稳定性的增长率比赤道相应条件下的小.中性风和电场对中纬Rayleigh-Taylor不稳定性有重要影响.当中性风速度达到10m/s时,其作用就超过了重力.漂移不稳定性也受到重力、中性风和电场的影响,离子-中性粒子碰撞能降低漂移不稳定性的增长率.本文的分析表明,在赤道电离层容易产生大尺度的Rayleigh-Taylor不稳定性,在中纬电离层易产生小尺度的漂移不稳定性.

 
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