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molecular beams
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  分子束
     Study on the Branching Ratio of Product NO (A, B, a) in Molecular Beams
     分子束条件下NO(A, B, a)态产物的分支比研究(英)
短句来源
     Study of NH and CH Supersonic Molecular Beams
     NH和CH超声分子束研究
短句来源
     A crossed molecular beams,state-to-state scattering study was carried out on the F+H_2→HF+H reaction at the collision energy of 5.02 kJ/mol,using the highly sensitive H atom Rydberg tagging time-of-flight method.
     利用高灵敏度的氢原子里德堡飞渡时间谱方法研究了 F+H_2→HF+H 反应碰撞能在5.02kJ/mol 下的交叉分子束反应态态散射动力学.
短句来源
     A method to measure the diameter of molecular beam with a glass system has been investigated. It has been used to measure the diameters of the molecular beams of H_2,N_2 and Ar.
     提出了一种检测分子束束斑直径的方法,研制了一套用以测量分子束斑直径的全玻璃分子束系统,并对H_2、N_2、Ar等气体的分子束进行了测量;
短句来源
     MOLECULAR BEAMS STUDIES OF LASER INDUCED CHEMICAL REACTION DYNAMICS
     分子束激光诱导化学反应动力学
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  “molecular beams”译为未确定词的双语例句
     In this article the progress in reaction dynamics by molecular beams including the developments and present status of the techniques of precollision reagent state selection and postcollision product state analysis, the theoretical methods of reaction dynamics, the advances of atom-molecule reaction dynamics, and the molecule-molecule reaction dynamics are discussed.
     首先评述碰撞前反应物的态选择技术,碰撞后反应物的态分析技术,和反应动力学的理论方法和现状; 然后评述原子-分子反应动力学和分子-分子反应动力学的进展;
短句来源
  相似匹配句对
     REACTION DYNAMICS BY MOLECULAR BEAMS
     分子束反应动力学
短句来源
     Laser spectroscopy for supersonic molecular beams
     超声分子束激光光谱学
短句来源
     Molecular Biology
     分子生物学
短句来源
     Molecular Modelling
     分子模型的建造
短句来源
     BENDING OF SANDWICH BEAMS
     三合板梁弯曲问题
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  molecular beams
This distribution function was previously employed for calculating the parameters in molecular beams formed by capillary sieves in the free-molecular flow regime [1].
      
An Electrodynamic Pulsed Valve for Molecular Beams
      
The pulsed valve with an electromagnetic drive, based on a permanent magnet and a movable coil, is intended to obtain pulsed molecular beams.
      
This device is suggested for application in the spectroscopy of complex molecules in molecular beams.
      
A high-efficiency ion source for a mass-spectrometer's detector of molecular beams and their scattering products is described.
      
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The paper describs and compares some epitaxial techniques of vapor-phase epitaxy (halide chemical vapor deposition, hydride CVD, metalorganic CVD), liquid phase epitaxy, molecular-beam epitaxy and ion implantation technique. Each of them has advantages and disadvantages in fabricating epitaxial structures for specific devices, therefore halide CVD and liquid-phase epitaxy have been used mostly for discrete microwave and optoelectronic devices at present while MBE, MOCVD and I I would get developed...

The paper describs and compares some epitaxial techniques of vapor-phase epitaxy (halide chemical vapor deposition, hydride CVD, metalorganic CVD), liquid phase epitaxy, molecular-beam epitaxy and ion implantation technique. Each of them has advantages and disadvantages in fabricating epitaxial structures for specific devices, therefore halide CVD and liquid-phase epitaxy have been used mostly for discrete microwave and optoelectronic devices at present while MBE, MOCVD and I I would get developed for monolithic ICs and mass-production. It is sure that the future of microwave system will depend on wafer quality, size and excellent epitaxial technique.

本文介绍和比较了汽相外延(卤化物CVD、氢化物CVD、有机金属化合物CVD)、液相外延、分子束外延等几种外延技术以及离子注入技术.在制作特殊器件的外延结构中,它们都各有优缺点,所以目前分立微波、光电器件多用卤化物CVD和液相外延制作,而MBE、MOCVD和离子注入技术的发展将适用于单片集成电路和大规模生产.可以相信,微波整机的未来将取决于晶片的质量、大小和理想的外延技术.

The first crossed molecular beam reaction apparatus in China has been built for studying moleculal reaction dynamics.Elementary chemical reaction can be observed under single col- lision condition using this equipment.The major goal is to study state-to-state reactions.Func- tions of such an expensive machine are considered as many as possible. This machine consists of three main parts:vacuum system,beam sources and detecting instruments.A series of pumps differentially pumped vacuum chambers are...

The first crossed molecular beam reaction apparatus in China has been built for studying moleculal reaction dynamics.Elementary chemical reaction can be observed under single col- lision condition using this equipment.The major goal is to study state-to-state reactions.Func- tions of such an expensive machine are considered as many as possible. This machine consists of three main parts:vacuum system,beam sources and detecting instruments.A series of pumps differentially pumped vacuum chambers are arranged for gas beam,buffer,oven,reaction zone and mass filter respectively.Oil diffusion pumps are adap- ted for all the chambers to evacuate except for the mass filter chamber using an ion pump. One of the beam sources is a supersonic nozzle beam and the other is a heated oven.It can be heated electrically to the temperature as high as 1600℃,which may produce various metal atom beams.The pressure in the reaction chamber is able to be maintained atabout 10~(-5) torr when both beams are operated.Following detecting means are considered:(1)a fixed quadru- pole mass filter to determine the mass number,beam intensity,and velocity;(2)a mono- chromater for analysis of chemiluminescent products,(3)a tunable dye laser for LIF,and (4)camera or OMA(optical multi-channel analyzer)for measuring angular distribution of chemiluminescent products.Thus,this equipment may be applied to following experimental researchs:(a)state distribution of chemiluminescent reaction products,(b)state distribution of“dark product”using LIF,(c)effect of initial energy state of reactents on reactions, and(d)photodissociation through laser.

这台装置由三大部分组成:真空系统、束源和检测仪器。气束源室、准直室、炉室、反应室和质谱室采用差级抽气。除质谱室用了一台离子泵外,各室均用油扩散泵抽气。束源之一是超音速喷射气束,另一个是加热电炉,其最高加热温度为1600℃,可产生各种金属原子束。当两束工作时,反应室的压强可维持在10~(-6)托左右。设计中考虑到了下列检测手段:①用于检测产物质量数、束强度和速度分布的四极滤质器;②用于化学发光反应产物分析的分光光谱仪;③用于产生激光诱导荧光的可调谐染料激光器;④用于观测反应产物化学发光角分布的照相机或 OMA(光学多通道分析器)。因此,这台装置可以用于下列实验研究。(a)化学发光反应产物的态分布;(b)用激光诱导荧光技术检测“暗”反应产物的态分布;(c)反应物的初始能态对反应的影响;(d)激光光解离。

A thin film electroluminescent (EL) cell having Au/ZnSe:Mn/n-Ge structure has been fabricated by molecular beam epitaxy (MBE). The lowest threshold voltage attained is 6V. Typical driving peformance of the EL cell gives 73 fL in brightness at the DC mode operation of 12.8V and 14.7 A/cm2 and the best quantum efficiency is 4,3×10-5(at 10,8V, 3A/cm2),

用分子束外延法制成了具有Au/ZnSe:Mn/n-Ge结构的电致发光单晶膜,最低起亮电压为6V。在直流12.8V和14.7A/cm~2的驱动下发光亮度为73fL、最大量子效率为4.3×10~(-5)(10.8V,3A/cm~2)

 
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