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平均扰动
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  “平均扰动”译为未确定词的双语例句
     The Mean Structures of Disturbance of Lower Level Environment Winds in the Preceding Stage of Heavy Rain
     暴雨前期低层环境流场的平均扰动结构
短句来源
     It is shown that the asymptotic(?) 1(r)-σ1(r) and (?) 1(r, 0)-σ1(r) relations can be derived very simply by using the method of double series expansion, where σ1, (?)
     本文将指出,为得到有限厚度旋涡星系中平均扰动引力势φ_1(r)与扰动面密度σ_1(r)的渐近关系,以及对称面上的扰动引力势φ_1(r,0)与σ_1(r)的渐近关系,我们不一定要从相应的三维渐近关系出发,而可以用二重级数展开方法直接地、十分简单地导出。
短句来源
     Computation and Application for Satellite Altimetry of Mean Disturbing Potential Elements from Disturbing Potential Model
     基于重力场模型的平均扰动场元的严密计算方法
短句来源
     Based on local coupled mode theory,authors analyzed single mode fiber grating′s mode distribution and coupling coefficient and obtained exact spectrogram.
     本文运用矢量局域耦合理论分析了平均扰动折射率随 Z轴变化的单模光纤光栅的纤芯模场分布、包层模场分布以及耦合系数 ,得到更为精确的光栅光谱特性 . 并分别计算了布喇格光栅和长周期光纤光栅在平均扰动折射率在 Z轴有扰动时的光谱特性图 .
短句来源
     This technique is based on identification of Fried parameter r0 in expression of . The identification of r0 is based on the facts: 1, Deterministic component, , including average turbulence MTF and aerosol MTF, is located at low frequency areas in the frequency domain. 2,The shape of can be analytically determined according to Fried theory.
     这种技术是基于对大气MTF解析式中的Fried参数r的识别,r_0的识别根据如下事实:平均扰动MTF和雾气(aerosols)MTF,作为大气点扩展函数H的确定成分,位于频域的低频区:的解析形式可通过Fried理论确定:与其退化图象在频域图象的剖面曲线中有相同的零截点。
  相似匹配句对
     Stabilization of Average Soliton Transmission with Its Energy Perturbed
     能量扰动平均孤子稳态化传输
短句来源
     For a sample of 38 sources we derive an average value of
     平均结果为
短句来源
     Mean Entropy
     平均
短句来源
     The Mean Structures of Disturbance of Lower Level Environment Winds in the Preceding Stage of Heavy Rain
     暴雨前期低层环境流场的平均扰动结构
短句来源
     AGGREGATION OF SIMULATION AND INFINITESIMAL PERTURBATION ANALYSIS IN DISCRETE EVENT DYNAMIC SYSTEM
     离散事件动态系统扰动仿真
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  average disturbance
Lastly, the ADCS should be designed to counteract the average disturbance torques encountered over the course of the mission.
      


It is shown that the asymptotic(?)1(r)-σ1(r) and (?)1(r, 0)-σ1(r) relations can be derived very simply by using the method of double series expansion, where σ1, (?)1(r, 0) and (?)1 are the surface density perturbation, the gravitational potential perturbation at the symmetric plane Z = 0 and the average potential perturbation respectively. The results are accurate to the order of both m2(kr)-2 and k(|Z|), where m is the number of spiral arms, k is the radial wave number, r is the distance from the center of...

It is shown that the asymptotic(?)1(r)-σ1(r) and (?)1(r, 0)-σ1(r) relations can be derived very simply by using the method of double series expansion, where σ1, (?)1(r, 0) and (?)1 are the surface density perturbation, the gravitational potential perturbation at the symmetric plane Z = 0 and the average potential perturbation respectively. The results are accurate to the order of both m2(kr)-2 and k(|Z|), where m is the number of spiral arms, k is the radial wave number, r is the distance from the center of the galaxy, and (|Z|) is the average vertical distance of a star from the symmetric plane Z = 0. Such, an accuracy is usually sufficient for the discussion of spiral modes in a spiral galaxy of small but finite disk thickness. It is pointed out that (?)1(r, 0)-σ1(r) relation can be expressed as a unified form for different vertical density profiles if (|Z|) is adopted as the thickness scale, and that (?)1(r)-σ1(r) relation can be expressed as a unified form for different vertical density profiles if (|Z-Z|}, the average vertical separation between two stars, is adopted as the thickness scale. Only the value of the ratio (|z-z'|)/(|z|) is a functional of the vertical density profile. However, for the usual profiles of physical meaning, these values are very closeto each other: It is for the Gaussian profile, 1/ln2 = 1.443 for the - sech2-[z/sz0(r)] profile, and 1.5 for the -exp [-|z|/z0(r)] profile.

本文将指出,为得到有限厚度旋涡星系中平均扰动引力势φ_1(r)与扰动面密度σ_1(r)的渐近关系,以及对称面上的扰动引力势φ_1(r,0)与σ_1(r)的渐近关系,我们不一定要从相应的三维渐近关系出发,而可以用二重级数展开方法直接地、十分简单地导出。所得结果对于紧卷性准确到m~2(kr)~(-2)量级,对于厚度效应准确到 k〈|z|〉量级,其中m为旋臂数,k为径向波数,r为到星系中心的径向距离,〈|z|〉为星到对称面距离的平均值。这样的精度对于讨论有限厚度扁盘状星系中密度波模式及其增长率通常是足够的。本文结果表明:在上述精度下,如采用〈|z|〉表征厚度,则不同纵向密度剖面下的φ_1(r,0)~σ_1(r)渐近关系可表为统一形式;如采用二星纵向平均距离〈|z-z’|〉表征厚度,则不同纵向密度剖面下的φ_1(r)~σ_1(r)渐近关系可表为统一形式。只有比值〈|z-z’|〉/〈|z|〉才是纵向密度剖面的泛函。对于符合物理意义的通常各种不同密度剖面,此比值都甚接近:对于高斯型纵向密度剖面,此比值为2~(1/2);对于 sech~2(z/z_1(r))型剖面,此比值为 1/In2=1.443;对于 exp...

本文将指出,为得到有限厚度旋涡星系中平均扰动引力势φ_1(r)与扰动面密度σ_1(r)的渐近关系,以及对称面上的扰动引力势φ_1(r,0)与σ_1(r)的渐近关系,我们不一定要从相应的三维渐近关系出发,而可以用二重级数展开方法直接地、十分简单地导出。所得结果对于紧卷性准确到m~2(kr)~(-2)量级,对于厚度效应准确到 k〈|z|〉量级,其中m为旋臂数,k为径向波数,r为到星系中心的径向距离,〈|z|〉为星到对称面距离的平均值。这样的精度对于讨论有限厚度扁盘状星系中密度波模式及其增长率通常是足够的。本文结果表明:在上述精度下,如采用〈|z|〉表征厚度,则不同纵向密度剖面下的φ_1(r,0)~σ_1(r)渐近关系可表为统一形式;如采用二星纵向平均距离〈|z-z’|〉表征厚度,则不同纵向密度剖面下的φ_1(r)~σ_1(r)渐近关系可表为统一形式。只有比值〈|z-z’|〉/〈|z|〉才是纵向密度剖面的泛函。对于符合物理意义的通常各种不同密度剖面,此比值都甚接近:对于高斯型纵向密度剖面,此比值为2~(1/2);对于 sech~2(z/z_1(r))型剖面,此比值为 1/In2=1.443;对于 exp[-|z|/z_1(r)]型剖面,此比值为1.5。

The atmospheric energy budget calculation over west tropical Pacific during the Sino—America Sea — Air Join Investigation has been made. The controlled area is divided into threepolygons (east, middle and west areas). Based on the data from this investigation during the 9ththrough 15th of January and the 1st to 14th of February, 1986, the horizontal transportation ofthe atmospheric energy budget is computed day by day. It is pointed that the direction of theatmospheric energy transportation in the west part...

The atmospheric energy budget calculation over west tropical Pacific during the Sino—America Sea — Air Join Investigation has been made. The controlled area is divided into threepolygons (east, middle and west areas). Based on the data from this investigation during the 9ththrough 15th of January and the 1st to 14th of February, 1986, the horizontal transportation ofthe atmospheric energy budget is computed day by day. It is pointed that the direction of theatmospheric energy transportation in the west part of west tropical Pacific is from the outerregion towards inner region, and it is in an opposite direction in the east and middle parts. Itshows that over the west area the warming is obvious during the investigation period. Inaddition, the regional differents for the local change of atmospheric energy are less than that ofthe transporting terms.

本文探讨了中美西太平洋海-气相互作用合作考察期间,热带海洋不同海域上空大气能量的水平输送和局地变化。我们把热带西太平洋划分成三个多边形(东、中和西部区),分别计算了1986年1月9—15日、2月1—14日逐日三个海区上感热、潜热和位能的平均、扰动输送项、局地变化项以及各边界面上大气能量的输送。得出西太平洋西部海域上空大气柱内能量的平均输送是由外界向区内输送,而中、东部海域则相反。这表明西太平洋西部热带海洋上大气柱内增温明显,而中、东部则不然。另外,大气能量局地变化的区域性差异,其量值比输送项值要小些。

Based on the friction equilibrium equation, the turbulent exchange coefficient K(z) is derived. Then, its finite difference form is used to compute local K(z) in the Ekman layer, supported by wind data from a double-theodolite. The following is the findings:

本文根据摩擦平衡方程,导出了湍流交换系数K(z)的表达式,然后借助于K(z)的有限差分式,直接应用双经纬仪实测风资料,计算了该地Ekman层中湍流交换系数K(z)。计算和分析的结果如下:(1)Ekman层中的湍流交换系数具有显著的日变化特征,日变曲线的基本形式呈双峰双谷型,就整个Ekman层的平均而言,K的平均扰动值约为K的四倍。(2)K的日变规律同气温、位温变化的平均趋势基本一致。(3)K的日变程同风速的涨落有关,例如,黄昏显著的风速涨落,对应于K廊线的特定日变程。其中特别有趣的是:夜间平均风速的变化同平均K的变化趋势完全一致,但二者在白天的变化趋势恰恰相反。这种根据实溅风资料得到的微妙关系,客观地揭示出Ekman层中风速日变化的物理本质,那就是湍流混合强度的日变化。本文还给出了若干个典型的实例。

 
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