It is an electron beam. In the 1890s, the latter part of the 19th century a very fashionable word was "ray."
那是个电子束，在十九世纪九十年代，就是19世纪末，一个很时髦的词汇-“光线。”
Instead, a single wavelength can be selected to produce the X-ray equivalent of a pure-colour beam of light.
事实上单独某一个波长的射线就可以产生好象一束单色光一样的纯净的伦琴射线。
The researchers then narrowed down the X-ray beam so that it was just a tenth of a millimetre across and found that the fractal-like regions occurred only where the beam struck the sample.
研究人员随后将X射线的光束收窄，使其只有十分之一毫米宽，这时他们发现，碎片形的区域只出现在射线照射的地方。
Then they brought the sample back to room temperature and exposed it to an X-ray beam from the facility while using a CCD detector to record the X-rays reflected from the surface of the sample.
然后他们将样品重置于室温状态，并使其接受X射线照射，同时使用CCD检测器来记录从样品表面反射回的X射线。
In X-ray crystallography, scientists turn large quantities of a protein or virus into crystal form, placing it in front of an X-ray beam.
运用X射线晶体学，科学家将大量的蛋白质或者病毒转换成了晶体形式，将其置于一束X射线光束之前。
Based on complex ray method, a paraxial approximation analysis of Gaussian beam transmission through a dielectric radome is presented.
本文根据复射线法对通过介质天线罩的高斯波束场进行近轴近似分析。
The basis of applications is the output of X-ray laser with high brightness, high coherence, and good beam quality So it is a main aim and contents for studies to achieve X-ray laser.
应用研究的前提是获得能够满足应用要求的X射线激光输出，因此如何获得高亮度、高相干性、高光束质量的饱和X射线激光输出是X射线激光研究的首要内容。
The Gaussian ray bundle is similar to Gaussian beam, except that it uses a simpler method to arrive at the width of the Gaussian.
高斯射线束方法相对于高斯波束方法的改进在于它使用了一个简单的经验公式来计算声束宽度。
Gaussian beam is the asymptotic solution of wave equation concentred at the central ray.
高斯束是波动方程在特定射线附近的高频渐近解。
The fractures in all the specimens were clearly visible when the X-ray beam was parallel to the plane of osteotomy.
而当X线光束与骨裂开的平面平行的时候，左右的骨折都可以被鉴别出来。
Any further increase or decrease in plane of the X-ray beam could not identify the fracture.
但假如在进一步地加大或减少成角，骨折就难以区别了。
In this paper, it is analyzed the propagation of a Gaussian beam in fiber media with ray tracing under the paraxial approximation.
利用光线追踪方法在近轴近似下模拟了高斯光束在不同折射率分布纤维状介质中的传播。
In this paper the mechanism and process of light beam surface alloying were investigated by SEM, X-ray diffraction, optical microscope, microhardness etc.
采用SEM、X射线、光学显微镜、显微硬度计等手段研究了高能密度光束表面合金化的机理和工艺。
Dubbed the 'death star' by NASA scientists the death ray destructive beam can obliterate the atmospheres of planets but may also trigger the birth of new stars.
NASA的科学家称之为“死亡恒星”，死亡射线的破坏性光束能量能够清除行星的大气层，但是也可能会激发新星的诞生。
Ray beam effective width of Xray Imaging system is an important parameter to evaluate the resolution of system.
射线成像系统的射线有效宽度是评定系统成像分辨率的重要成像指标。
Theprocess of the bottle beam generated from an axicon-lens system is described by a novel method based on the ray-tracing.
利用几何光学的光线追迹法形象地描述了轴棱锥透镜系统产生局域空心光束过程。
A real ray tracing method was used to simplify the optical design of a Gaussian beam shaping system.
研究了真实光线追迹优化光学系统的方法以简化高斯光束整形系统的光学设计。
The electron beam ion trap(EBIT) and the electron ion source(EBIS) are new instruments for the study of X-ray produced by very highly-charged ions when they interact with free electrons.
利用电子束离子源（EBIS）或者电子束离子陷阱（EBIT）产生的慢速高电荷态重离子束轰击金属靶面，离子束与靶面作用并复合辐射特征X射线；
The protection system of light beam formed emission and receiving of infrared ray is introduced.
介绍了利用红外线的发射与接收所构成的光束保护系统。
It is shown that the ray trajectory depends strongly on the spot size and the inclination of the incident beam and the structure of the lens.
计算结果表明，光线轨迹主要由入射光束的光斑尺寸、倾角和透镜的结构决定。
The most accurate ray-tracing model is used firstly on the development simulation of resist exposed by electron beam.
在电子束曝光胶图形的三维显影模拟工作中，首次使用了最精确的三维线踪模型。
The con figuration of aplanat for making high resolution X-ray Zone plate to be used in beam line of Synchrotron Radiation Laboratory is also presented.
文中还给出了在同步辐射实验室显微术光束线中用激光干涉法制作高分辨率软X波带板的光学系统。
The method made the X-ray beam harden at first, and then the kinds of prehardening materials and correction rule of beam hardening artifacts were obtained through experiment.
该方法对X射线进行一定程度的预硬化，通过实验获得预硬化材料种类及射束硬化伪像的校正规律。
The results given in this paper is useful for analysing the transformation of ray or beam through a complex optical system and the problems of multielement resonators.
文中所得结果能用于分析光线或光束通过复杂光学系统的变换和多元件光腔的问题。
This paper provides the first measurement results of X-ray spectrum at the beam lines of synchrotron radiation. It describes the detector and spectral system, measuring method and data acquisition.
本文提供了北京正负电子对撞机同步辐射光束线上X射线能谱的首次测量结果，文章对探测器和谱仪系统、测量方法及数据分析予以扼要的描述。
The direct volume imaging (DVI) means the reconstruction of volume data from a series of cone beam X ray 2d projections.
对由锥形束x线投影重建体积数据的直接体积成像方法进行了理论研究。
The intensity of the secondary radiations is weak compared with the intensity of the primary X-ray beam, and some of it, too, may not escape from the material.
这些次级放射线的强度跟原始x射线相比较弱，而且其中的一部分可能留在了那种物质中。
Microstructure and stress of broad-beam laser hardened gear was studied with SEM, tem and X-ray stress analysis system.
利用扫描电镜、透射电镜和X射线应力分析系统，对齿轮宽带激光淬火后淬硬层显微组织和应力特性进行了细致分析。
Using ray transfer matrix, the characteristics of the external cavity and the feedback laser beam are studied.
利用传输矩阵理论结合具体实验装置分析了外腔反馈注入系统的特性和反馈注入光束的传输特点。
The manufacture of high-line-density X-ray transmission gratings for X-ray spectroscopy by using electron beam lithography and X-ray lithography was reported.
针对X射线透射光栅摄谱仪中的高线密度光栅，研究了采用电子束曝光和X射线曝光技术结合制作高线密度X射线透射光栅的工艺技术。
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