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中层大气     
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  middle atmosphere
     NO_x Vertical Distribution in the Middle Atmosphere in the Northern Hemisphere
     北半球中层大气中NO_x的垂直分布特征
短句来源
     THE NONLINEAR INTERACTION OF FORCED ROSSBY WAVE PACKETS IN THE MIDDLE ATMOSPHERE Ⅱ. NUMERICAL COMPUTATION
     中层大气受迫Rossby波包的非线性相互作用 Ⅱ.数值计算
短句来源
     THE NONLINEAR INTERACTION BETWEEN ROSSBY WAVE AND INERTIAL-GRAVITY WAVE IN THE MIDDLE ATMOSPHERE (Ⅱ)STIMULATION OF WAVE PACKETS
     中层大气Rossby波与惯性重力波的非线性相互作用(Ⅱ)波包之间的相互激发
短句来源
     RECENT ADVANCES OF MIDDLE ATMOSPHERE RESEARCH IN CHINA
     中国中层大气研究的近期进展
短句来源
     Middle Atmosphere and Global Changes
     中层大气与全球变化
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更多       
  the middle atmosphere
     NO_x Vertical Distribution in the Middle Atmosphere in the Northern Hemisphere
     北半球中层大气中NO_x的垂直分布特征
短句来源
     THE NONLINEAR INTERACTION OF FORCED ROSSBY WAVE PACKETS IN THE MIDDLE ATMOSPHERE Ⅱ. NUMERICAL COMPUTATION
     中层大气受迫Rossby波包的非线性相互作用 Ⅱ.数值计算
短句来源
     THE NONLINEAR INTERACTION BETWEEN ROSSBY WAVE AND INERTIAL-GRAVITY WAVE IN THE MIDDLE ATMOSPHERE (Ⅱ)STIMULATION OF WAVE PACKETS
     中层大气Rossby波与惯性重力波的非线性相互作用(Ⅱ)波包之间的相互激发
短句来源
     Analysis of H_2O and CH_4 Distribution Characteristics in the Middle Atmosphere Using HALOE Data
     利用HALOE资料分析中层大气中水汽和甲烷的分布特征
短句来源
     THE INFLUENCE OF SOLAR FLARE ON THE TEMPERATURE OF THE MIDDLE ATMOSPHERE
     太阳耀斑活动对中层大气温度的影响
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  “中层大气”译为未确定词的双语例句
     The Simulation Study on Middle Lightning Phenomenon
     中层大气闪电现象的模拟研究
短句来源
     Saturation mechanism of gravity waves in mesosphere is discussed by simulating the nonlinear upward propagation of gravity wave in mesosphere.
     通过对向上传播的重力波波包在中层大气中的非线性传播过程进行数值模拟 ,讨论中层大气中重力波的饱和机制 .
短句来源
     A NUMERICAL STUDY ON THE ENERGY PROPAGATION AND CONVERSION OF GRAVITY-WAVE PACKETS EXCITED BY WAVE-LIKE DISTERBANCE IN THE MESOSPHERE
     波状扰动激发的重力波波包在中层大气中能量传播和转换特性的数值研究
短句来源
     Studying the lunar atmospheric tide at 76-98 km can help us know how the mesosphere atmosphere affects on it, when it propagates upwards.
     研究76-98 km高度上的太阴潮,有助于我们了解当潮汐上传时中层大气对它所起的作用。
短句来源
     MESOSPHERIC MF RADAR IN WUHAN AND ITS PRELIMINARY OBSERVATION RESULTS
     武汉中层大气中频雷达及其初步探测结果
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  middle atmosphere
The infrared spectrometry of Venus in the range 6-45 μm allows one to sound the middle atmosphere of Venus in the altitude range 55-100 km and its cloud layer.
      
It will allow one to sound the middle atmosphere (55-100 km) of Venus and its cloud layer on the dayside, as well as the lower atmosphere and the planetary surface on the night side.
      
An analysis of the evolution of microscopic particles (dust grains) in the Earth's ionosphere and their effect on ionization in the middle atmosphere is presented.
      
Effect of diffraction on stimulated Raman scattering of laser radiation in the middle atmosphere
      
Kinetics of processes in the middle atmosphere during the laser excitation of O2 molecules
      
更多          
  the middle atmosphere
The infrared spectrometry of Venus in the range 6-45 μm allows one to sound the middle atmosphere of Venus in the altitude range 55-100 km and its cloud layer.
      
It will allow one to sound the middle atmosphere (55-100 km) of Venus and its cloud layer on the dayside, as well as the lower atmosphere and the planetary surface on the night side.
      
An analysis of the evolution of microscopic particles (dust grains) in the Earth's ionosphere and their effect on ionization in the middle atmosphere is presented.
      
Effect of diffraction on stimulated Raman scattering of laser radiation in the middle atmosphere
      
Kinetics of processes in the middle atmosphere during the laser excitation of O2 molecules
      
更多          


This is a brief report of a preliminary survey of certain rain-bearing systems over China in later spring and summer. In the first part, a general description of the methods of analysis used in this survey is given. As the temperature and wind fields are weak, and the precipitation is heavy, smaller intervals for the isotherms and contours in the constant pressure surface and pseudo-equivalent potential instead of potential temperature in the cross section analysis are used.In the second part, there are descriptions...

This is a brief report of a preliminary survey of certain rain-bearing systems over China in later spring and summer. In the first part, a general description of the methods of analysis used in this survey is given. As the temperature and wind fields are weak, and the precipitation is heavy, smaller intervals for the isotherms and contours in the constant pressure surface and pseudo-equivalent potential instead of potential temperature in the cross section analysis are used.In the second part, there are descriptions of the structure and development of five frequently observed rain-bearing systems i.e. cold front, blocking high and cold vortex, monsoon heat low, warm front and typhoon.The last part consists of discussions of some points of view in synoptic meteorology in China. It is stated that the monsoon precipitation is various in intensity and duration according the large-scale flow patterns. The difference of moisture content in the middle troposphere as a criterion for the identification of equatorial or tropical maritime air mass is proved to be missleading. It is shown that the upper air moist content is high only within the raining region near the polar or equatorial front. To the south of the equatorial front within the so-called equatorial air mass, the moist content in the middle troposphere is as low as within the tropical maritime air mass. It is the convergence and lifting of the tropical air mass which releases the convective instability and induces the surface moist air rising to the middle troposphere. The phenomenon of the forward-inclination of the so-called North-West Trough based on the time cross-section of wind is proved to be a mistake by combining two systems into one trough. The terminology of shear line, and the correct application of synoptic models in weather analysis and forecas-ting are also discussed.

本文是一年来从事夏季降水天气初步普查的简单报告。第一节首先指出所用分析方法与一般国内所通用者,稍有不同。高空等压面分析,取20米作为等高缐间隔,2℃作为等温缐间隔。代替40米及5℃的间隔,以适应夏半年较弱的温度场与气压形势场,在剖面分析中以等假相当位温缐代替位温缐,与等温缐配合以适应降水天气的凝结降水过程。 第二节讨论了五种夏半年基本降水天气系统,即冷锋、阻塞高压与冷涡、季风热低压、 暖锋及有风的结构,并简单地叙述了演变过程。 第三节对某些天气概念提供一些批判性的讨论。根据现已增加的观测材料,论证季风与梅雨是多样性的,决定于大规模的温度场与流场特性,以高空湿度大小区分赤道气团与热带海洋气团,证明是不适当的,因为中国赤道锋降水区域以南,即在所谓南南季风的赤道气团中,中层大气仍是干燥的。降水区域内,中层对流层的大量水份,是由于辐合或抬升的作用,使潜势的对流不稳定性成为现实的不稳定性,而由下层空气上升带上去的。文中还论证了所谓西北槽槽缐前倾是将两个系统混作—个系统的不正确桔果。最后还讨论了切交缐及一般模型在天气分析预报中的应用与限制。

A meteor ablation model of the sodium layer is developed,in which ablation is the source and depositon on dust particles is the sink.All the photochemical reactions which appeared in previous work are considered and 40 reactions are picked out,ot be included in the model.Kealistic eddy diffusion and downward electrodynamic transport are also incorporated in the model.The importance of the photochemical reactions and the various other aspects of the model are evaluated and compared with each other.Results show...

A meteor ablation model of the sodium layer is developed,in which ablation is the source and depositon on dust particles is the sink.All the photochemical reactions which appeared in previous work are considered and 40 reactions are picked out,ot be included in the model.Kealistic eddy diffusion and downward electrodynamic transport are also incorporated in the model.The importance of the photochemical reactions and the various other aspects of the model are evaluated and compared with each other.Results show that the relative concentrations of various species of sodium and its compounds are mainly determined by a set of photochemical reactions.The main species above 105 km is Na+,below 80 km is NaOH and between 80 km and 105 km is Na.The total concentration is mainly determined by the profiles of ablation and dust concentration.The atmospheric background and the photo-ionization rate constants can produce seasonal and diurnal variations of the sodium layer.Comparison of the theoretical model with observation shows generally a good agreement.

本文计算了地球中层大气的钠层模式。在此模式中,流星蒸发是形成钠层的源而尘埃的吸附足汇。本文考虑和比较了有关钠层形成机制的已往工作中所出现过的所有光化学反应,选出了四十个合理而重要的化学反应作为本模式的化学基础。模式也考虑进了高度变化的涡流扩散和带电粒子受地磁场作用的向下飘移等机制。本文对各化学反应和模式中各个因素的重要性作了比较和评价。 本文计算结果表明,在各高度上中层大气中的钠及其化合物的相对浓度主要取决于化学反应过程本身,与源、汇及各层间扩散机制等关系不大。虽然在钠层模式计算中必须考虑到十种钠成分,但105公里以上主要成分足钠离子(Na~+)。80公里以下主要成分是氢氧化钠(NaOH)。80公里到105公里间主要成分是中性钠原子(Na)。所有成分的总浓度主要地取决于源和汇随高度的分布。大气背景及电离常数的变化可以引起钠层相当显著的季变化和周日变化。 理论计算结果与历年来的观测结果作比较后可以看到两者大体上符合得相当好。

The coupling through electric processes is one of the mechamisms of solar coupling influence on meteorology. A critical review is given on the observations of electric currents and fields in the near Earth region and on the empirical and theoretical models based on the observations. A brief picture of the electric properties is therefore outlined in the near Earth region both in average and solar active conditions. Highlight is in the lower and middle atmosphere near the surface of the Earth and especially on...

The coupling through electric processes is one of the mechamisms of solar coupling influence on meteorology. A critical review is given on the observations of electric currents and fields in the near Earth region and on the empirical and theoretical models based on the observations. A brief picture of the electric properties is therefore outlined in the near Earth region both in average and solar active conditions. Highlight is in the lower and middle atmosphere near the surface of the Earth and especially on atmospheric electric properties and their modulation by solar activities.

通过电过程的耦合是太阳对气象耦合影响的机制之一,本文扼要地综述了迄今为止人们对近地环境内电流和电场的观测结果以及在此基础上所建立的经验和理论模式;给出了在平均状况下和太阳活动下近地环境电性能的总概貌,重点在靠近地球表面的低层、中层大气区域;着重介绍了该区域内的大气电性能及其受太阳活动的调制.

 
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