查询词典 electron-volt

One signature of positron-electron annihilation is gamma rays carrying 511 thousand electron-volts of energy.

电子-正电子湮灭的一个信号就是携带511keV能量的伽玛射线。

For the plane wave of laser without pulse shape, we derive the express of electron trajectory by the relative Lorentz and energy equations. Note that the orbit of electron becomes a "fat-8" in the average rest frame. For the plane wave of Gaussian laser, we may know that, through relative Hamilton-Jacobi equation, electrons are accelerated in the front of pulse and decelerated backward. Whereas for the non-plane wave of Gaussian laser, we solve the Lorentz and energy equations by fourth order Runge-Kutta method.

对于无脉冲形状的激光平面波是从考虑了相对论效应的Lorentz方程和能量方程出发，得到了电子的运动轨迹方程表达式，在纵向平均速度参照系下该电子的轨迹呈现"8"字形；对于高斯型单色激光平面波是从相对论Hamilton-Jacobi方程出发，得到激光平面波在脉冲前沿加速电子而脉冲后沿减速电子，电子能量增益为零；而对于高斯型单色激光非平面波是从拉格朗日运动方程和能量方程出发，通过四阶Runge-Kutta法数值求解，得到电子在纵向有质动力、横向电场作用下加速电子，最后在强大的横向有质动力作用下从脉冲侧面散射出去，可以获得很大能量增益本文得到了相应的电子瞬时动量解析表达式。

GAPⅡa's agglutination form was observed by scan electron microscope and transmission electron microscope. There were mainly empty and different size globoid form among other forms such as chip, needle and alveolus.

通过扫描电镜和透射电镜观察，GAPⅡa聚集态主要以大小不一的空心球状形式分布于其他如片层、针状和蜂窝状形式之间。X-射线衍射分析结果表明经冻干得到的GAPⅡa粉末结晶度不高，但在结晶区其分子的规整性较高。

The properties of single-chain and pauci-chain polystyrene microspheres and recent results on the electron microscopy and selected area electron diffraction of single-chain monocrystals of polyethylene oxide, isotactic polystyrene, cis-1, 4-polybutadiene and guttapercha are presented and discussed.

介绍和讨论了单链和寡链聚苯乙烯玻璃体微球的性质以及聚环氧乙烷、全同立构聚苯乙烯、顺-1， 4-聚丁二稀、反-1， 4-聚异戊二烯单链单晶电子显微镜和选区电子衍射观察的最新结果。

The origin of this giant Hall Effect is contributed to 3d local electron- electron interaction.

样品的电阻率温度曲线研究表明异常霍尔电阻率可能来源于3d局域电子－电子的散射作用。

Applying atomic many-body theory to analyse the Goldston diagrams of effective Hamiltonian and wave operator about electron-electron correlation for open shell atoms, we use a simple method to evaluate the effective Hamiltonian and calculate the correlation effectes of Corbon with HFS model as a zeroth order approximation. Making contrasts with the experiment and the calculation based on HF model we get pleased results.

应用原子多体理论对开壳层原子中电子关联效应的有效哈密顿量及波算符的Goldston图进行了分析，在此基础上得到了计算有效哈密顿量的简单方法；以HFS模型为零级近似对中性碳原子基态的关联效应进行了计算并通过与实验结果及其他文献基于HF模型进行的计算相比较，得到了令人满意的结论。

The factors such as introduction of aromatic heterocycle with small delocalization energy, formation of acceptor-donor structure, and strong electron-donating or electron-withdrawing abilities of substituents lead to the high third-order nonlinear optical property.

引入离域能小的芳杂环，形成吸供构型，增大取代基的吸或供电子能力等有利于获得较大的三阶非线性光学性能。

They act as electron-transport agents and play an important role in the electron-transport chains of respiration, photosynthesis, and the microsomal system responsible for the desaturation of fatty acids in heterotroph ic bacteria.

它们作为电子传递物在呼吸电子迁移链、光合作用及微粒体系统中起重要作用，它还负责异养细菌中脂肪酸的去饱和作用。你知道它的英文吗？

Because it requires a high quality electron beam, it was first demonstrated and developed on electron storage rings.

由于对束流品质要求很高，相干谐波自由电子激光首先是以储存环作为驱动器而发展起来的。

Alterations of matrix were searched by histochemistry, atomic force microscopy, scanning electron microscopy and transmission electron microscopy.

通过组织化学、原子显微镜检查法、扫描电子显微镜术和透射电子显微术来研究基质的变化。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。