查询词典 charge density

The simultaneously measurements of surface electric field and Maxwell current density show that, underneath active thundercloud, surface Maxwell current density reflects the change of cloud charge sources, and is quasi-steady between lightning discharges.

利用实验观测和模式计算相结合的方法，对传导电流、位移电流和电晕电流的相对重要性作了估计。

The density of states and charge density distribution are used to study the underlying mechanism of structure and phase stability of ternary Laves phases in Mg-Al-Ca alloys.

态密度和电荷密度的计算用来研究Mg-Al-Ca合金中三元Laves相稳定性的内在微观机制。

The higher is the trap density in the material, the higher is the surface charge density, and the lower is the flashover voltage on alumina surface.

研究发现，氧化铝陶瓷的陷阱分布与其真空中的表面带电和沿面闪络特性之间存在一定的内在联系，即材料中的陷阱密度越大，其表面电荷密度越高，且沿面闪络电压越低。

With quantum chemical calculation, all the information about electronic and spatial structures of specific compounds can be obtained, including molecular orbital energy level, atomic charge density, polarizability, and electrostatic charge of molecules.

通过对化合物进行量子化学计算，可以获得有关分子的电子结构和立体结构信息，如分子轨道能级、原子的电荷密度、极化率以及分子的静电荷等。

The Polarization Vector P and the Effective Charge Density and Surface Charge.

极化向量 P ，有效电荷密度与表面电荷。

Based on the ionic model, the effect of covalence and charge density overlap on the total energy of YBa2Cu3O7 with different charge distribution are considered.

基于离子模型，我们对于YBa_2Cu_3O_7中几种可能的电荷分布情况的总能量进行了计算。

The study shows that the adoption of this new technique makes the charge more compact and brings about a satisfactory supplement of liquid ex- plosives,thus increasing the charge density,which is most advantageous to the crimination of pores,cavities,gaps at the bottom and in loose struc- tures.

研究表明，采用这种新方法可使装药更加密实，液态炸药能很好地补缩，从而增加装药密度，消除气孔、缩孔、底隙和疏松结构。

Keywords: Field emission gun, Electron optics, Charge density method, Space charge effect

计算结果表明，这种方法对场发射枪电子光学性质的研究有实际的应用价值。

There are positive charge and negative charge, but the energy density of electric field is all positive, as a result, the integral electromagnetic energy is always positive, electromagnetic mass is always a positive value.

电荷分为正负，但电场的能量密度却总是正的，所以积分得到的电磁能量总是正的，因而电磁质量也总是一个正值。

By the method of electril charge projection the expression of charge density and field intensity on midperpendicular plane on a conductive plate are given.

利用电荷投影方法，给出导体薄板上电荷密度的表示式和中垂面上场强分布。

A historical region of southwest France between the Pyrenees and the Garonne River. The duchy of Aquitaine was joined with France after the marriage of Eleanor of Aquitaine to King Louis VII in1137, but its possession was disputed after her subsequent marriage to Henry II of England.

阿基坦法国西南部一个历史地区，位于比利牛斯山和加隆河之间，在1137年阿基坦的埃莉诺与国王路易斯七世结婚之后阿基坦公国加入法国，但当她再嫁英国亨利二世后，其归属权便受到争议

There are moments when I look at the smiling , happy faces of my expectant staff and wonder how they will cope when confronted by an outraged housemaster along with an unrepentant and recalcitrant bleached blond teenager in 18 years ' time .

有时候，我看着那些满怀期待的员工微笑，幸福的脸，想着当他们遇到一位愤怒的宿舍管理员和一位不知悔改，叛逆，而且将头发染成白色的18岁少年时，他们会如何处理。