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- 与 external 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Shadow effect can not be neglected for thermal analysis of spacecraft,Accroding to the angle between solar light and antenna orbit plane and its orbit location,analytical geometry method was used for accurately calculating solar radiation heat flux distribution of reflector surfaces.To analyze the temperature field under heat flux,the formulations of net radiation flux density between two gray elements and the net flux density of gray surface under external thermal flux were deduced.Based on the characteristic of space environment,the nonlinear temperature distribution in transverse direction of reflector shell self radiation were considered,the finite element formulations were given for orthogonal material layered shell by Galerkin method.A layered element including a inner heat source layer was proposed,and the finite element formulation expressed by DOF of the inner heat source layer were put forward with temperature and heat flux boundarys between adjacent layer.
单馈反射面赋形天线是未来星载天线发展的一个重要形式,分析了基于物理光学、几何光学和几何绕射理论的理想反射面辐射场;介绍了基于几何光学的反射面天线赋形方法;针对赋形过程中辐射场的快速分析要求,比较分析了基于物理光学的Fourier-Bessel和Jacobi-Bessel级数展开方法以及GB展开分析方法;利用GB展开快速分析方法在20GHz频率下对0.6m口径的天线进行赋形分析,实现中国大陆的30dB增益覆盖,通过数值计算研究了固定增益期望下的口径尺寸随频率的变化,以及频率为20GHz的不同尺寸天线赋形后的覆盖目标区域最大增益的变化情况。
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The traditional method is to use an external anamorphic lens which can optically distort the image from a 16:9 aspect ratio into the wider 2.35 format.
传统的方法是使用外部变形镜头可以光学扭曲的形象从一个16:9的宽高比纳入更广泛2.35格式。
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The HD8200 has an anamorphic vertical stretch mode on board, so it is ready to accommodate an external anamorphic lens.
在HD8200上有一个变形垂直延伸模式,所以准备,以适应外部变形镜头。
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It figures centrally in the theory of external arguments and in the characterization of long-distance anaphora.
它将在域外论元理论部分和长距离复指的分析中集中描绘。
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Internally, the central city; that is far from economic progress external, face a battle element and backward close, be like " anchoret " the neighbour like.
对内,远离经济发展的中心城市;对外,面临战争因素和落后封闭,如"隐士"般的邻国。
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How to adapt to the external environment and promote the regional economy are the problems which are worth studying for Xigang northern zones anear oceans.
如何适应外部环境,更好地发展区域经济是西岗北部临海地区值得研究的问题。
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In view of this, this paper attempts to take the overall situation of the port industry in our country as the background, Xigang northern zones anear oceans as the target, the SWOT as the analytic method, the analysis for the internal and external environment of Xigang northern zones anear oceans as the basis, in order to propose a comprehensive and systematic Xigang maritime economic zone development strategy.
鉴此,本文试图以我国港口业的总体状况为背景,以西岗临海地区为对象,运用 SWOT 分析法,在分析临海地区的内部环境和外部环境的基础上,立足西岗地区的未来,全面系统地论述了西岗临海经济带的发展战略,包括战略目标和战略定位,同时对实现西岗临海经济带战略目标的实施提出了相应的实施策略和建议,即加强临海地区的规划建设,完善临海地区服务体系,推动联合腹地共同发展,实现可持续发展以及发展西岗地区六大产业。
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The pressure distribution on external surface of the test vehicle was analyzed when it passed the anemology station on the east of"Mengjin"from upward and downward. The vehicle aerodynamic forces by piecewise integrating technology were obtained.
摘 要:对试验列车上、下行通过"猛进东"测风点时的车体表面压力分布情况进行分析,采用分块积分法得出试验列车上、下行通过"猛进东"测风点的气动力。
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If the external mirror is tilted by an angle of α, the diffraction images of in-phase mode exactly coincide with the apertures, while out-of-phase mode is imaged exactly in between the apertures, resulting in high loss.
最后采用Z/2腔对LD阵列的外腔锁相进行了实验研究,并在外腔镜不偏转和偏转角度α时分别观察到同相模和异相模的锁相现象。
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In this thesis,based on the DFT+NEGF first-principles method,we construct a lead-molecule-lead sandwich system with single benzene-based molecule to investigate the relationship between the structure and properties of the molecular devices and the factors that influence properties of the molecular devices.Our computational investigations on these molecular devices are primarily concentrated on the effect of contact geometry between molecules and electrodes,the effect of side groups,the effect of different torsion angle between two phenyl rings and the effect of external electric field.This thesis consists of five chapters:In Chapter one,we mainly introduce the research background and development of the molecular electronics,including the experimental fabrication of molecular electronic components and theoretical simulation methods.Afterwards we discuss the questions that need to be solved in this area.Finally,the main contents of this thesis are listed.In Chapter two,we introduce the theoretical methods used in this thesis, including the main first-principles calculation methods,i.e.,the Density-Functionmethod and nonequilibrium Green\'s function.
本论文拟采用密度泛函理论和非平衡格林函数相结合的第一性原理计算方法,选取苯基小分子作为研究对象,构建了金属电极/有机小分子/金属电极三明治结构体系,系统地研究了苯基分子器件结构的改变与分子电输运性质之间的关系以及影响分子器件电输运性质的相关因素,其中重点研究了分子与电极间可能的接触结构改变、官能团、分子间的扭转角以及外电场对苯基分子电输运性质的影响,本论文主要包括以下五个章节的内容:第一章为综述部分,主要介绍了分子电子学产生的背景、分子器件的研究意义、当前研究分子器件的实验和主要理论方法,以及目前在研究分子器件中存在的一些问题,最后给出了本论文的主要研究内容和技术路线。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力