Three dimensional CT for the industrial pieces with large and flat size can be carried out by means of this method with a low energy X ray source.
在射线源能量较低的情况下,此法能够对大而扁的工业构件实施三维ct重建。
Using field emission cathode, X ray source can be made with several advantages: smaller volume and brighter, high frequency response, in-time turning on, etc.
采用场发射阴极的X射线光源具有体积小,辐射强度高,频率响应快,可以随时开启,无需预热的优点。
In the process of X ray photography and digitizing of X ray image, the influence of the X ray source and noises on the image quality is discussed in this paper, and a mathematical model is built.
讨论了工业X射线照相及照片数字化过程中 ,X射线源及噪声对图像质量的影响 ,建立了图像退化的数学模型 ,并以此为基础 ,给出了复原的算法及处理结果 。
The process involved using intensive X-ray light produced at the National Synchroton Light Source in Brookhaven, N. Y.
这种方法使用了纽约布鲁克黑文的国家同步加速器光源产生的强大的X射线。
They used a powerful X-ray source called a synchrotron, which uncovered metals within the ancient fossilised feathers.
他们使用同步加速器作为强X射线源,可以发现古化石羽毛中的金属成分。
However under the unconventional CT scanning mode, using the low-energy X-ray source, which can save the energy, can fulfill the CT reconfiguration of the specimens with the flat-type.
但在非常规的CT扫描方式下能用低能的X射线源完成这些形如扁平体试件的CT重构,节省了能量。
However, this algorithm does not apply for circular orbit cone-beam scan with line-focus X-ray source.
但是,这种算法不能满足线X射线源圆轨道锥束扫描的情况。
Additionally, if the X-ray source is in a binary system, the X-rays will be periodically cut off as the source eclipsed by the companion star.
另外,如果x射线源是一个双星系统,当x射线源被它的伴星所遮挡时,发出的x射线就会周期性地被切断。
A method detecting and measuring the intensity of spectrum from laser plasma soft X-ray source is presented.
提出了一种新的探测和测量激光等离子体软X射线源光谱强度的方法。
In this paper, the principle, experimental arrangement and computer program of fundamental parameters method in radioisotope source excited energy dispersive X-ray analysis are described.
本文叙述了放射性同位素源激发能量色散x射线分析中基本参数法的原理、实验装置和计算机程序。
The presented results also include the relations between scattering factors with therapeutical fields and the distances of primary X-ray source and target plane.
比较的结果还包括均整块和初级准直器的散射与射野大小及离开X射线源距离之间的关系。
Using high - power pulsed laser - produced plasma as soft X - ray source for approach lithography is described in this paper.
描述了用高功率脉冲激光打靶产生的等离子体作为软x射线源而进行的接近式软x射线光刻研究。
The special setting for precise positioning of the X-ray source in industrial Computed Tomography (ICT) system has been made, and the testing program has been developed.
为了实现工业CT系统射线源的精确定位,设计了射束中心位置测试专用装置,并开发了测试程序。
In large container inspection systems, the image is constructed by parallel scanning with a one-dimensional detector array with a linac used as the X-ray source.
大型集装箱检查系统中,采用一维线阵列探测器并行扫描方式,并以直线加速器为X射线源。
Monolithic capillary X-ray lens can collect divergent white X-ray beam emitted from a point X-ray source into a quasi parallel beam.
整体平行束X光透镜能把点X光源发出的发散X光束聚焦后转变成准平行X光束。
Radio galaxy is also a strong red external source and X-ray source.
射电星系同时也是强的红外源和X射线源。
The X-ray source used in this experiment is particularly prepared.
用于泡沫材料密度测量的X射线源是特制的激发源。
A strong cosmic source of x-rays, E0102 was imaged by the Chandra X-ray Observatory shortly after its launch in 1999.
E0102是个明亮的宇宙X射线源,所以钱卓拉在1999年发射升空后不久,就曾观测过它。
The thickness gauge, as one of the applications, has succeeded in thickness measuring of the different materials in large range, and present a new application field for characteristic X-ray source.
作为应用之一制成的核辐射测厚仪,已成功地实现了在很宽的范围内对不同材质的厚度测量,丰富和扩大了这一应用领域,揭示了特征X射线新的应用前景。
The most attractive one is high order harmonic generation (HHG), which can be used as a source of extreme ultraviolet (XUV) and soft X-ray lasers.
其中高阶谐振的产生,由于可以作为产生真空远紫外线和软X射线的可能途径,受到人们的极大关注。
One of the best cases known goes by the name Cygnus X-1, because it was the first X-ray source discovered in the constellation Cygnus the Swan.
最经典的例子就是天鹅座X-1,这是在天鹅座星云中发现第一次发现的X射线源。
The characteristics of X-ray emission from source region and implosion region were obtained.
基本上弄清了空腔靶源区、向爆区X光发射特性。
In comparison with laser plasma soft X-ray sources using metal target, the light source is debris-free.
与金属靶激光等离子体软x射线源相比,此光源无碎屑。
A laser-produced plasma soft X-ray-VUV source generated with low energy laser system has been designed.
设计了一种小型激光等离子体软X线-真空紫外光源。
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 rapid variability points to ultrarelativistic electrons acting via a synchrotron process as the probable X-ray source.
其快速的变异表明,存在通过一个同步加速过程发挥作用的超相对论电子,它们是X-射线的可能来源。
Factors that affect the image quality of in-line outline X-ray imaging are investigated with 4w1a light source in Beijing Synchrotron Radiation Facility (BSRF).
利用北京同步辐射光源研究了准平行束X射线同轴轮廓成像中影响成像质量的若干因素。
The exposal source of LIGA technology is expensive synchrotron radiation X-ray, so that constrains it's wide application.
但LIGA技术需要昂贵的同步辐射X射线源,因此限制了其广泛的应用。
For X-ray source with a certain spectral width, the source with minimum spectral width as possible to get the high resolution images with rich information should be selected.
对于具有一定谱宽的X射线源,应选择谱宽尽量小的源,以获得含信息量丰富、分辨率高的图像。
For X-ray source with a certain spectral width, the source with minimum spectral width as possible to get the high resolution images with rich information should be selected.
对于具有一定谱宽的X射线源,应选择谱宽尽量小的源,以获得含信息量丰富、分辨率高的图像。
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