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focus voltage
相关语句
  聚焦电压
     There is dependence between e/m error and accelerating voltage or focus voltage in the measurement of e/m by magnetic focusing method.
     在利用磁聚焦法测量电子比荷的实验中,测量误差与示波管的加速电压和聚焦电压存在较大的相关性.
短句来源
     For instance,in a 21 inch color tube,a 700 V focus voltage variation has 0. 35 mm STCS with the old electron gun,whereas with the new electron gun it results in only 0.0061 mm STCS and no change of the spot size was observed.
     如果聚焦电压变化700V,采用新枪的21英寸彩管的静会聚漂移仅0.006mm,与原枪相比,屏上电子束斑变化很小。
短句来源
     Dynamic focus voltage error of projection display system was studied in this article. Parabola dynamic focus method, projection tube shape and optics processing were analyzed.
     从投影显示系统典型的动态聚焦方法与投影管特殊的荧光屏结构以及光学处理等方面对投影显示系统的动态聚焦电压误差进行研究.
短句来源
     Difference between parabola and actual dynamic focus voltage was measured. The relationships of dynamic focus voltage error caused by image optics processing trapezium distortion and projection tube assembly position error were acquired in theory.
     分析了动态聚焦电路产生的抛物线形状动态聚焦电压与实际需要电压波形之间的差异和光学设计造成的荧光屏图像梯形失真以及投影管安装位置误差所导致的动态聚焦电压误差.
短句来源
     Influence of various ion source parameters,such as its emission current,its cathode voltage,and its focus voltage,on the sensitivity of the quadrupole mass spectrometer(QMS),model QMS422,was experimentally studied.
     本文通过改变QMS4 2 2型四极质谱计离子源的发射电流、阴极电压和聚焦电压等参数值 ,测量了质谱计灵敏度的相应变化 ,给出并分析了实验结果。
短句来源
  相似匹配句对
     FOCUS
     投资聚焦
短句来源
     Focus
     聚焦
短句来源
     voltage. with the increase of r.
     放电电压增加 ,热稳定性增加。
短句来源
     voltage of work;
     工作电压;
短句来源
     Focus on the imperfect of conventional voltage/reactive power synthetic control.
     针对变电站常规电压 /无功综控的不足 ,本文借助智能控制技术处理复杂对象的优势 ,利用神经网络的自学习能力 .
短句来源
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Multi-helix electrostatic focusing syetems are analysed.The electrostatic field distribution is obtained by means of a particular helix coordinate system.The traje- ctory equation of electrons in this electrostatic field is analysed.The condition of minimal ripple of electron beam and the expressions of focusing voltage and voltage of the inner cylindrical conductor are obtained.The influence of injection conditions on the electron trajectory is discussed.As special cases of the present analysis,bi-...

Multi-helix electrostatic focusing syetems are analysed.The electrostatic field distribution is obtained by means of a particular helix coordinate system.The traje- ctory equation of electrons in this electrostatic field is analysed.The condition of minimal ripple of electron beam and the expressions of focusing voltage and voltage of the inner cylindrical conductor are obtained.The influence of injection conditions on the electron trajectory is discussed.As special cases of the present analysis,bi- filar and quadruple wire helix with and without inner cylindrical conductor are consi- dered.Their general curves are obtained by calculation.

本文分析了多螺旋线静电聚集系统。用特殊的螺旋座标求出了该系统的静电场分布。在此基础上,分析了电子运动的轨跡方程,得出了电子注波动最小的条件,以及相应的聚焦电压 V_f 与中心导体电压 V_1 的公式。分析了注入条件对电子轨跡的影响,得出有中心导体的系统比无中心导体的系统对注入条件要求低。作为特例分析了双螺旋线及四螺旋线静电焦系统,并给出了相应的普适计算曲线。

A sub micron focused ion beam (FIB) system with Ga + liquid metal ion source (LMIS) and two lenses is described. In that system, an adjustable tip and the variable beam size and current technique were used. 100 nm beam size was achieved at 15 keV energy and 30 pA beam current. To overcome the difficulty of alignment in the two lens system, a successively testable principle was adopted, and a reasonable adjustment program was designed at the time of structure design. A more sensitive method for evaluation...

A sub micron focused ion beam (FIB) system with Ga + liquid metal ion source (LMIS) and two lenses is described. In that system, an adjustable tip and the variable beam size and current technique were used. 100 nm beam size was achieved at 15 keV energy and 30 pA beam current. To overcome the difficulty of alignment in the two lens system, a successively testable principle was adopted, and a reasonable adjustment program was designed at the time of structure design. A more sensitive method for evaluation of alignment called drift method is discussed, which is based on the principle that the image drift caused by focus voltage variation will be minimized when the object is closed mostly to the axis of the lens.

介绍了一台使用液态金属离子源的二级透镜亚微米聚焦离子束系统。系统使用了可以微动的针尖以及电可调现场可变束径束流技术,在加速电压为15keV,束流为30pA时,束径可达到100nm。在系统设计时,提出了逐级可测性原则,并在设计结构时同时设计一套科学的调整方案,使二级透镜系统的对中调整更加迅速可靠。探讨了一种新的对中判断方法,称为漂移法,就是在保证光阑孔和透镜光轴合轴很好的情况下,聚焦电压偏移一定量时像点位置的漂移最小时物点离轴最近。漂移法比常用的束径最小法更加灵敏、可靠。

Capillary isoelectric focusing (CIEF) can separate proteins with pls different from each other by 0.02 pH unit. The basic principles. separation methods and characteristics of CIEF are described. Application problems including electroosmosis,detection techniques and the migration of focused zones are described also. The factors that affect the separation efficiency are discussed including the composition and concentration of ampholytes. the length of capillary and the focusing voltage. Examples...

Capillary isoelectric focusing (CIEF) can separate proteins with pls different from each other by 0.02 pH unit. The basic principles. separation methods and characteristics of CIEF are described. Application problems including electroosmosis,detection techniques and the migration of focused zones are described also. The factors that affect the separation efficiency are discussed including the composition and concentration of ampholytes. the length of capillary and the focusing voltage. Examples of practical applications for the separation of protein mixtues are presented.

毛细管等电聚焦(CIEF)可分离等电点(pI)相差0.02pH单位的蛋白质。本文介绍了CIEF分离蛋白质的基本原理、方法和特点;阐述了CIEF分离蛋白质应解决的基本问题,包括消除或减小电渗的涂层方法。检测方法和条件。蛋白质区带的迁移及pI测定方法。讨论了影响CIEF分离效能的因素,如两性电解质的组成和浓度、毛细管长度、聚焦电压等。列举了应用CIEF分离具有不同pI蛋白质混合物的实例,对CIEF的应用前景进行了展望。

 
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