For example, the electric field or gravitational field is given by the gradient of the gravitational or electric potential.
例如由重力势梯度给出的重力场，或由电势梯度给出的电场。
Although the description of the system involves the electromagnetic potential, the physical properties only depend on the electric and magnetic field-strength.
结果表明，虽然对体系的描述涉及到电磁势，但体系的物理性质只依赖于电场和磁场的强度；
A variety of methods are employed to solve Poisson equation when discussing on the surface potential and surface electric field models of LDMOS with different structures in this paper.
在讨论不同结构的LDMOS表面势和表面电场模型时，本文采用多种方法求解泊松方程。
Introduces the magnetic scalar potential method solving boundary-value problems of magnetic field generated by steady electric current is introduced.
介绍了用磁标势求解稳恒电流磁场边值问题方法、步骤。
Based on the relationship of electric field strength and electric potential, the capacity of non-parallel plate capacitor is derived from solving differential equations.
对于非平行平板电容器，利用电场与电势的基本关系，求解微分方程，得到电容器的电容值。
The computation program based on this theory can analyze the potential and intensity of electric field on each section of transmission lines and each position along ADSS.
在此基础上编制了分析输电线路任意截面及沿adss光缆走向的电位、场强分布的三维计算软件。
In current literatures methods of electric field calculations are only applicable to the case, where the potential differences between charged objects and the potential reference point are known.
在目前电场计算的文献中，限于计算电位参考点和各带电体间的电位差均为已知时的带电系统中的电场分布。
Based on changes in electric property of underground media and natural potential field caused by landfill leakage, an online electricity monitoring system is designed to detect the leakage.
根据垃圾场渗滤液渗入地下后引起的地下介质电性变化及对自然电位场的改变，设计了用于垃圾填埋场渗滤液渗漏的在线电学监测系统。
The electric potential and the field of point charge are resolved with a special function.
利用特殊函数求解电势、电场，计算了点电荷与磁偶极子相互作用的电磁角动量。
The effects of direction, strength of interferential electric field, as well as the arranged space between steel electrodes on measured potential gradient were investigated.
实验研究干扰电场方向、强度和钢电极间距等对测量电位梯度的影响。
The uniform expressions of multilayered medium spectral dyadic electric and magnetic current Green's functions for field and potential are derived by using spectral domain immittance approach.
利用谱域导抗法推导分层介质的电磁流场位并矢格林函数各分量的统一的表达式。
On assumption that the surface of the conductive body is uniformly charged, the method for evaluation of the electric field and potential distribution is insignificant in practice.
假设带电体表面均匀带电，运用积分求电势、电场分布的方法，实际意义不大。
The results obtained from calculation and measurement provide the basis for choosing the electric potential of the field wires in the chamber.
测量和计算的结果为漂移室场丝电位的选取提供了依据。
The results prove that the physic characteristics of symmetrical static electric field can be described by the vector potential in static electric field.
结果说明在电场中引入矢量势，能够刻画静电场的物理性质。
According to the electric potential of a point charge and the superposition theorem of the field, a series solutions of the potential and the field of a uniformly charged ring are derived.
根据点电荷电势和场的叠加原理，导出了均匀带电细圆环电势和电场的级数表达式。
The simulation results include the distribution of the electric potential between the grids and distribution of the electric field strength, and also the distribution of Xenon ion number density.
模拟得到了栅极间电势分布、电场强度分布及栅极间氙离子数密度分布。
Improvement of potential and electric field distributions for composite insulators are discussed. Potential distributions tests are performed to verify the calculation result.
为验证计算结果，还进行了复合绝缘子的电位分布试验。
Electric field intensity and potential in static field are two physic parameters by which the Properties of electric field are described.
在静电场中，电场强度和电势是描述电场性质的两个物理量。
Results show that the electric field induced refractive index change in DQWs varies with the width of the intermediate potential barrier. And it decreases as the incident optical intensity increases.
结果表明，折射率改变不但与入射光强有关，更与阱中的势垒宽度有关。
Probability tomography, as a new potential approach of geophysical interpretation, is based on the relation between the measured surface electric field and the scanning function.
概率成像方法是利用测量的地面电场与电场扫描函数进行归一化的互相关运算，从而对地下电荷进行定位。
Piezoelectricity is the ability of some materials to generate an electric field or electric potential in response to applied mechanical stress.
材料的压电性质是电能和机械能互相转化的性质，从压电材料的本构关系上体现为力-电耦合。
The new solution of an electric potential and an electric field distributions for a charged electric conduct ring.
在直角坐标系中分别表示出了均匀带电椭圆形环在中心轴线上任意位置处的电势及电场。
For square wave motor, the thesis set forth equivalent weakening magnet field control way by use of transformer electric potential to...
对方波电机，文中提出了一种新型的用变压器电势抵消激磁电势而实现的等效弱磁控制方法，并作了理论分析与实验验证。
For square wave motor, the thesis set forth equivalent weakening magnet field control way by use of transformer electric potential to...
对方波电机，文中提出了一种新型的用变压器电势抵消激磁电势而实现的等效弱磁控制方法，并作了理论分析与实验验证。
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