5-D) software(Orion),in which the secondary electron effects are considered and the performance of MDC with a refocusing system is simulated really.
5维)软件设计出效率较高的带有再聚焦系统的四级降压收集极,并考虑了次级电子的影响,模拟计算多级降压收集极和再聚焦区的性能,为行波管整管效率的提高提供了保证。
The finite difference and PIC method are used to simulate the behavior of secondary electrons stimulated by primary X ray photoelectrons.
介绍了稀薄大气环境中飞行体X射线响应的数值模拟过程中 ,由初级电子激励的空气次级电子的粒子跟踪技术 ,对 1Pa以下气压条件进行了计算 ,讨论了次级电子的等离子体行为及其对电磁场响应的影
Research on energy distribution of second electrons from photons impacting with atoms in tissue equivalent material;
光子在组织等效介质中产生的次级电子能量分布研究
To research the energy distribution rules of second electrons from photons with different energy which impact with atoms in tissue equivalent material.
为探讨不同能量光子在组织等效物质中产生的次级电子在能量上的分布规律,依据理论分析和计算的方法,明确了水作为组织等效材料的合理性,利用MC方法中粒子输运技术,对光子在介质中行为进行了大量的模拟计算,得到了不同能量光子与介质中原子(H、O)相互作用的事件类型的比例分布情况以及在这些事件中产生的次级电子能量分布的真实情形,并获得了重要研究结论:1、光子能量小于28keV时,光子与介质原子之间的作用以光电效应为主;2、能量为28～30keV的光子,光电效应与康普顿散射几率大致相等;3、能量大于30keV的光子,康普顿散射事件逐步占据主导地位,这种事件几率随光子能量的增加而增大。
the emission of electrons from a surface that is bombarded by higher energy primary electrons.
由于高能初级电子的轰击电子从物质表面向外发射的过程。
Legal System Building of Municipal Land and Resources E-Administration;
市级国土资源电子政务法制建设初探
On Adoption of Electrical Engineering and Electron Technology;
武警初级指挥专业《电工电子技术》教学探析
China's E-business is still in its infancy and remains to develope.
中国的电子商务还处于初级阶段,还有待于发展.
Determination of the Primary Aromatic Amines and Azo Dyes in Plastic Components of the Electrical and Electronic Products by High Performance Liquid Chromatography Mass Spectrometry
电子电气产品中初级芳香胺和偶氮染料检测技术的研究
charge composition of primary cosmic rays
初级宇宙线电荷成分
Ion Channel Mechanisms Underlying Spatiotemporal Plasticity of Primary Sensory Neuronal Action Potentials
初级感觉神经元动作电位时空可塑性的离子通道机制
secondary electron conduction target vidicon
次级电子导电视像管
Ion accelerator-ion implanter facilities with the energy up to MeV have been built initially at Peking University.
北京大学初步建成能量直至兆电子伏级的离子加速器——离子注入设备系统。
An inducting current, circuit, or coil.
初级线圈感应电流，电路或线圈
electronic grade solvent
电子工业纯度级溶剂
secondary electron multipactor limiter
次级电子倍增限幅器
From these burgesses the first elements of the bourgeoisie were developed.
从这个市民等级中发展出最初的资产阶级分子。
Observation of the Spontaneous Discharge of Auditory Nerve Primary Fibers
听神经初级神经纤维自发放电的观察
The acceptance examination code of primary rural electrification
GB/T15659-1995农村初级电气化验收规程
The Research and Design of Short-Secondary Linear Induction Motor;
长初级直线感应电动机的设计与研究
On the Advertisement Management Optimizing Means of County-level TV Stations;
市县级电视台优化广告经营方式初探
Novel primary series matching scheme for piezoelectric ultrasonic transducer
压电超声换能器初级串联匹配新方法
