数值计算中考虑了两个上能级的自发辐射速率，给出了脉冲能量的空间演化及电离粒子在空间的分布。
The spontaneous relaxation of upper levels is considered in numerical solutions. The calculation results show the evolution of pulse energy and the distribution of ionization particle.
数值计算中考虑了两个上能级的自发辐射速率，给出了脉冲能量的空间演化及电离粒子在空间的分布。
The spontaneous relaxation of upper levels is considered in numerical solutions. The calculation results show the evolution of pulse energy and the distribution of ionization …
这个纽带是通过地球的导电的区域来实现的，就象太阳风从太阳带来大量的电离粒子，它们形成了一个非常活跃的层包饶在地球外面，被称之为电离层。
The link is through the earth's electric field. As the solar wind carries ionized particles from the sun, they form a charged layer around the earth, called the ionosphere.
从太阳而来的辐射，将尘埃粒子吹离彗发，形成尘埃彗尾；同时，来自太阳的带电粒子将一些彗星气体电离成离子，形成离子彗尾。
Radiation from the sun pushes dust particles away from the coma, forming a dust tail, while charged particles from the sun convert some of the comet's gases into ions, forming an ion tail.
最重要的一点是在电离层的电子和其他带电粒子的密度是波动的。
One of the most important of these is a fluctuation in the density of electrons and other electrically-charged particles in the ionosphere.
中子是中性不带电的粒子，当它通过物体时并不直接产生电离或激发作用。
Neutrons, being electrically neutral particles, do not produce ionization or excitation directly in their passage through matter.
一种金属或玻璃试管，充满通过传送已被控制中子而电离了的气体，在试管中产生一种电荷，指示一种特殊粒子。
A metal or glass tube filled with gas that is ionized by passing charged particles, producing within the tube an electric charge indicative of a particular particle.
应用分波展开法，通过电离态上的粒子布居，研究了电离相干现象。
The phenomenon of ionization interference is studied with partial-wave expansion method through the particle population of the ionized state.
各种金属或金属合成靶材被带电离子撞击，造成金属原子成为自由粒子沉积在上面的聚酯薄膜的表面。
Various metal or metal the material composing a target is collide with by electrified ion is brought about the metal atom becoming the free particle deposition surface in mylar above.
论文采用统计求和法推导出系统自由能的表达式，利用系统自由能对粒子数取最小值的原理得到计算电离度的沙赫方程。
And the equation to calculate ionization rate is obtained at the base of the principle that the system free energy is the least versus the particle number.
极区电离层强烈地受到极区对流电场、极光粒子沉降和场向电流等的影响。
The polar ionosphere is strongly influenced by convection electric fields, auroral particle precipitation, and field-aligned electric currents etc.
极光发生的地区沉淀着高能粒子，高层大气流和电离层，和上下浮动的磁场。
In the auroral region we have precipitation of energetic particles, currents in the upper atmosphere and ionosphere, and fluctuating magnetic fields.
结果表明，冬季中山站电离层内的电离生成主要取决于从磁层沉降的粒子。
The results show that the major source of electron and ion production at Zhongshan Station is almost completely dependent on particles precipitated from the magnetosphere.
由于涉及多种过程（包括入射离子与靶粒子的碰撞激发、电离、电荷转移等）及大的能量范围，我们采用多种方法联合处理这些过程。
The cross sections of excitation, ionization and charge transfer processes are obtained for energies between a few meV/u and MeV/u.
有许多这样的质子和电子还被电离了，所以还有不少这样的被称为离子的带电粒子在飘来荡去。
In many of these the proton and electron have become separated, resulting in free-floating charged particles called ions.
用矩方法与Boltzmann方程相结合，推导出气体弱电离环境下粒子所满足的流体力学方程组。
Using moment method, combined with Boltzmann equation, a set of fluid kinetics equations is used to describe the motion of particles in the weak ionization gas.
电离层(一种电磁波导体，位于地球上方100公里处)由一层荷电粒子组成，作为一个抵当太阳风的樊篱。
The ionosphere, an electromagnetic-wave conductor, 100 KMS above the earth, consists of a layer of electrically charged particles acting as a shield from solar winds.
电离层(一种电磁波导体，位于地球上方100公里处)由一层荷电粒子组成，作为一个抵当太阳风的樊篱。
The ionosphere, an electromagnetic-wave conductor, 100 KMS above the earth, consists of a layer of electrically charged particles acting as a shield from solar winds.
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