查询词典 electron

It seems that the electron outside the atomic nucleus moves in an orbital around atomic nucleus.

将一束很弱的电子束投射到极薄的金属箔上，但电子穿透金属箔，在箔后的照相底片上记录下分散的感光斑点，这表明电子显示出微粒的性质。

" Orbital Mathematical expression, called a wave function, that describes properties characteristic of no more than two electron s near an atomic nucleus or molecule."

轨道：数学表述，称为波函数，它描述原子核附近的或分子中的原子核系统附近的电子不能多于两个这一特性。

All living beings and material have faint magnetic field extremely, the magnetic field to wind by electron atomic nucleus produce when rotating.

所有的生物及物质均带有极其微弱的磁场，这种磁场是由电子绕原子核旋转时产生。

Dependence of laser absorption and hot electron generation on atomic number Z and laser incident angle has been observed.

由于界面的影响，厚靶和薄靶的能量吸收和产生的超热电子也有所差别。

The results show that this detection system has a better atomic number contrast than the detection system in the conventional scanning electron microscope.

结果显示该探测系统比常规电镜中的探测系统具有更高的成分衬度，因此在靶成分的分析中有广阔的应用前景。

All the compositions satisfy the same electron concentration $e/a$=1.5 and average atomic radius 0.1496 nm as those of the Zr$_{60}$Al$_{20}$Ni$_{20}$ bulk metallic glasses.

根据等电子浓度和等原子尺寸判据设计了四种Zr--Ti--Al--Ni系合金，并用激光诱导燃烧合成的方法制备了材料。

In atomic vapor laser isotope separation, the metal is heated and melted by electron beam, and some atoms are on the metastable states. In order to analyse the influence of metastable states' deexcitation on vapor physical parameters, such as velocity, temperature, direct simulation Monte Carlo method is used to simulate the 2 D gadolinium evaporation from long and narrow crucible.

在原子法激光同位素分离工程中，金属受电子束的加热而熔化，有一部分原子处于亚稳态能级，为了分析在蒸发过程中亚稳态原子退激对原子蒸气的速度、温度等物理特性的影响，采用直接模拟蒙特卡罗法模拟钆原子蒸发过程，分析亚稳态原子退激过程对蒸气特性的影响。

High temperature evaporation of molten cavity heated by electron beam in crucible is one of the most important processes in the uranium cycling system in atomic vapor laser isotope separation.

电子枪加热坩埚熔池高温蒸发是原子蒸气激光同位素分离铀循环系统的一个重要环节。

Simplier and more efficient ion extraction methods for atomic vapor laser isotope separation AVLIS were evaluated using a 2-D electron-equilibrium model to compute and compare three electrostatic methods the parallel electrode method, the Π type electrode method, and the improved M type electrode method.

为探索用于原子蒸气激光同位素分离AVLIS的简单有效的离子引出方法，用二维流体理论电子平衡模型计算比较了3种静电场方法平行板电场法，Π型电极法，改进M型电极法计算发现，二维流体理论电子平衡模型并不能很好地描述Π型电极法对另外两种静电场方法，计算了不同外加电压、不同的初始原子密度和不同的目标同位素丰度等条件下的离子引出情况从计算结果可以看出，改进M型电极法不论是从离子引出时间还是从碰撞损失率，都要比平行板电极法好得多当外加电压较高或初始原子密度较高时，这种好处就更加明显因此，改进M型电极法是一种可供实际采用的比较好的静电场方法

A theory of atomic structure that assumes an electron orbiting a nucleus can only be at certain energy levels.

假设电子需要有一定能量才能环绕核子轨道的原子结构理论。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。