制造伽马射线短脉冲的一种方法，是电子与正电子的碰撞——之后的湮灭，使粒子的质量转化为能量。
One way to create such short bursts of gamma rays is through the collision — and subsequent annihilation, as the mass of those particles converts into energy — of an electron and a positron.
模拟结果表明，横向磁场通过改变电子与中性粒子的碰撞速率，对电子参数产生不同程度的影响。
The results show that the magnetic field affects the electron transport parameters obviously through changing the collision rate between the electrons and neutral particles.
把大量的邻近电子撞开，是很不精确的：有些电子会凌乱地弹开，而浪费能量；同时也会产生许多碰撞而发热。
Shoving large Numbers of electrons around is imprecise-some shoot out in random directions, wasting energy-and it creates lots of collisions, which produce heat.
电子的自由飞行步长由电子与中性粒子的碰撞频率来决定。
The electron free flying time is determined by the electron -neutral particle collision frequency.
由于电子与氢原子碰撞所造成的典型双电子散射所造成的放射状波函数(此图形由国家能源研究科学计算中心所提供。)
A representative radial wave function of two electrons scattered in the collision of an electron with a hydrogen atom. (Image courtesy of National Energy Research Scientific Computing Center.)
给出了等离子体电子密度线性分布和指数分布时，雷达电磁波的频率、电子碰撞频率、等离子体密度对电磁波衰减的影响。
For different plasma-density profiles, the effects of the frequency of EM wave, collisional frequency and plasma density on the attenuation of electromagnetic wave were discussed.
利用夫兰克-赫兹实验仪测量了电子气体的速度分布函数，并分析了电子与氩原子碰撞的动力学过程。
The velocity distribution function of the electron gas is measured by using Franck-Hertz experiment instrument, and the dynamical process of collision between electron and argon atom is analyzed.
计算了电子的密度分布，电子与中性粒子的非弹性碰撞速率，以及电子能量和电子通量分布等。
The electron density, the electron -neutral inelastic collision rates, the electron energy and the electron flux distribution are calculated.
本文以碰撞几率定律——电子自由程分布律为基础，进行统计计算，导出了碰撞次数公式及电子繁流公式。
The microscopic processes of an electron avalanche are discussed and calculations are made by the statistics of collision probability.
基于光电效应原理。我们设计了一个新型脉冲激光光电子枪，它可以作为飞行时间质谱的电子碰撞电离的电离源。
Based on photoemission effect. we design a laser photoemission electron gun for electron impact ionization source of time of flight mass spectrometer.
从微观机制上分析推断：外加电场使非稳态等离子体中的电子作定向运动，加剧电子与原子之间的碰撞是上述结果的主要原因。
The collision between atoms and electrons moving in a definite direction with the additional static electric field is considered to be the primary reason for the result mentioned above.
考虑了内壳层电子激发的组态相互作用后，采用R矩阵方法计算了电子碰撞类锂碳离子的共振激发碰撞强度。
The multichannel R-matrix code is employed to compute the collision strengths for electron-impact excitation of pentacid Mg ion.
一个高反向偏置电压产生一个强有力的内部电场，加速了通过硅晶格的电子，并通过碰撞电离产生二次电子。
A high reverse bias voltage creates a strong internal electric field, which accelerates the electrons through the silicon crystal lattice and produces secondary electrons by impact ionization.
一种包装盒，该包装盒用于电子产品，以保护该电子产品免受外部碰撞。
A packing box for an electronic product to protect an electronic product from external impact.
结论如下：1离子通量由电子吸收的能量与产生单个电子-离子对的等效电子碰撞能量损失决定。
The conclusions are: 1 the ion flux is determined by the power delivered into electrons and the effective collisional energy loss of electrons for creating a pair of electron-ion.
当电子-中性粒子的碰撞频率低于电磁波的角频率时，碰撞会加强电子的碰撞吸收和静电波的吸收；
When the electrons-neutral collision frequency is less than the EM angular frequency, the collision absorption rates increase with the electron-neutral collision.
当电子-中性粒子的碰撞频率低于电磁波的角频率时，碰撞会加强电子的碰撞吸收和静电波的吸收；
When the electrons-neutral collision frequency is less than the EM angular frequency, the collision absorption rates increase with the electron-neutral collision.
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