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space crystal
相关语句
  空间晶体
     SPACE CRYSTAL GROWTH OF ACIDIC PHOSPHOLIPASE A_2 FROM SNAKE VENOM
     蝮蛇毒酸性磷脂酶A_2的空间晶体生长
短句来源
     EXPERIMENTAL AND THEORETICAL STUDY OF CONVECTIVE EFFECTS IN SPACE CRYSTAL GROWTH
     空间晶体生长流体效应的实验研究和理论分析
短句来源
     Dynamic Flow Visualization in Space Crystal Growth
     空间晶体生长实验中流场的动态显示研究
短句来源
     This paper presents the fundamentals of programmable Multizone Furnace for Space Crystal Growth.
     空间晶体生长多温区炉可避免机械振动对微重力环境的干扰,更适合于空间晶体生长实验,因此已受到广泛的重视。
短句来源
     The method of numerical calculation was introduced in detail, and some significant conclusions for the space crystal growth was discussed briefly.
     详细介绍了计算方法,并对获得的有关空间晶体生长的一些有意义的结论作了概括和讨论
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  “space crystal”译为未确定词的双语例句
     STUDY OF PROGRAMMABLE MULTI-ZONE FURNACE FOR SPACE CRYSTAL GROWTH
     空间多温区炉温度梯度电控移动研究
短句来源
     SPACE CRYSTAL GROWTH OF PROTEINS WITH DOMESTIC FACILITY
     用国产装置进行的空间蛋白质结晶实验
短句来源
  相似匹配句对
     ON D - SPACE
     关于D-空间
短句来源
     SPACE
     空间
短句来源
     Experiment on Crystal Growth in Space
     微重力条件下晶体生长的实验研究
短句来源
     VARIATION OF SPACE GROUP OF CRYSTAL STRUCTURE
     晶体结构空间群的变化
短句来源
     Crystal Oscillator
     晶体振荡器
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  space crystal
Thus, for instability analysis, the convenient representation is the fourier transformation of the real-space crystal into the reciprocal lattice.
      


The electrical and optical properties of Te-doped GaAs grown in space and on the earthrespectively were systematically studied by using Hall, C-V, EL, PL and DLTS techniques.Theresults demostrated that (1) Free carrier concentration of the regrown space-crystal is one ma-gnitude less than that of the ground-crystal. (2) There is a transition region between the spaceand ground grown materials in which the electron concentration (variation from the groundto the space) decreases gradually first,then goes down abruptly...

The electrical and optical properties of Te-doped GaAs grown in space and on the earthrespectively were systematically studied by using Hall, C-V, EL, PL and DLTS techniques.Theresults demostrated that (1) Free carrier concentration of the regrown space-crystal is one ma-gnitude less than that of the ground-crystal. (2) There is a transition region between the spaceand ground grown materials in which the electron concentration (variation from the groundto the space) decreases gradually first,then goes down abruptly to the crystal grown in space.This is caused by a special crystal growth condition in space. (3) DLTS measurement on thespace samples revealed two deep electron traps with very low concentrations (N_t/N_d<0.0001)which located below the conduction band 0.27 eV and 0.60 eV respectively and the hole trapsare not seen in these samples. (4) The I-V characteristics and EL intensities of the singleheterojunction diodes grown on the substrate of the space material by using LPE methodclearly showed the similarity each other.This indicated that the space crystal had a verygood electrical and optical homogeneity.Ths is because i) thermal convections in the meltand solution convections are suppressed under microgravity conditions, ii) The stoichiometryfluctuations caused by thermal convections in the melt and in the vapor phase as well as so-lute convections can be also eliminated in space.

用多种实验手段分别对地面和太空生长的掺Te砷化镓单晶的电学、光学均匀性和深能级行为进行了实验研究.初步结果表明:在太空进行再生长的GaAs单晶电子浓度比原地面生长的籽晶小一个数量级,电子浓度由地面晶体到太空晶体的过渡是陡变的;DLTS测量发现太空单晶中存在两个电子陷阱,分别位于导带下0.27eV和0.60eV处,深能级密度为浅施主N_D的10~(-3)-10~(-4);少子注入未观察到空穴陷阱;用太空GaAs单晶为衬底制备的25个单异质结(SH)二极管,具有一致的I-V和发光特性,这反映了太空晶体的均匀性优于地面晶体.此外,还对太空生长GaAs单晶电子浓度降低的可能原因、深能级行为以及太空生长高质量晶体的前景作讨论.

Space crystal growth is a prospective frontier discipline. The research topics of the theme include:fundamental theory,method and process of crystal growth under microgravity conditions. This study on crystalgrowth in space is reviewed in this paper,consisting of 5 sections:(1)microgravity environment;(2)backgroundof crystal growth research in microgravity;(3)crystal growth experiments in space;(4)ground-based experi-mental research and theoretical simulation;(5)the research...

Space crystal growth is a prospective frontier discipline. The research topics of the theme include:fundamental theory,method and process of crystal growth under microgravity conditions. This study on crystalgrowth in space is reviewed in this paper,consisting of 5 sections:(1)microgravity environment;(2)backgroundof crystal growth research in microgravity;(3)crystal growth experiments in space;(4)ground-based experi-mental research and theoretical simulation;(5)the research prospects on microgravity crystal growth in China.

空间晶体生长是一个有前景的前沿学科,这一研究主要包括:在微重力条件下晶体生长的基本理论、方法和过程。本文是一篇空间晶体生长的综述,包括5个部分:(1)微重力环境;(2)微重力晶体生长研究背景;(3)晶体生长的空间实验;(4)空间晶体生长的地基实验研究和理论模拟;(5)我国微重力晶体生长发展前景。

This paper presents the fundamentals of programmable Multizone Furnace for Space Crystal Growth.The most important technology used in the Furnace,i.e.the electro-controlled motion of temperature gradient,is also discussed. On the basis of theoretical analysis,the preliminary research of the Furnace has been done.Some useful results are obtained from the experiments.

空间晶体生长多温区炉可避免机械振动对微重力环境的干扰,更适合于空间晶体生长实验,因此已受到广泛的重视。该文叙述了空间多温区炉的基本设计原理;提出了炉膛轴向温度分布及移动的两种模式,并对温度梯度电控移动这一关键技术进行了分析;同时也简述了多温区炉电控系统的设计原理。在一个多温区炉实验模型中做了地面实验研究,在400~800℃的温度范围内,建立并电控地移动了最大25℃/cm的轴向温度梯度,移动过程匀速且平稳,最大速度24mm/h。

 
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