It is given a formula about the general relationship between polarization and such charge as induced charge and free charge, and the sufficient condition that polarization is decided only by the distribution of induced charge.
给出了极化强度与极化电荷及自由电荷的一般关系,指出了极化强度仅由极化电荷分布决定的充分条件。
In special conditions, electric displacement vector D is in relation to free charges, magnetic field intensity H is in relation to conducting current.
在特殊情况下，电位移矢量 D仅与自由电荷分布有关； H仅与传导电流有关。
Under general conditions, electric displacement vector is not only related to free charges but also to polarized electric charges.
分析了电位移矢量在一般情况下不仅与自由电荷有关 ,而且还与极化电荷有关 ,并给出了电位移矢量仅与自由电荷有关的条件 ,研究了极化电荷的分布规律。
We have discussed the condition in which the electric displacement D may be simply determined by free charges in the medium and the contribution from polarization charges is not necessarily considered.
当我们研究的问题满足一定条件时，电位移矢量Ｄ仅与自由电荷有关，而与极化电荷无
Based on the wireless sensor network of the ZigBee technology, we design and implement the wireless monitoring system of temperature for the high voltage switch contact, including the wireless temperature measurement network, high voltage self-supplying power source and PC monitoring software.
设计并实现了无线测温网络、高压自具电源、PC监测软件。
DEMONSTRATION ON THE DIFFERENCE BETWEEN POLARIZED CHARGE AND FREE CHARGE
极化电荷与自由电荷之间区别的演示实验
The radiation is due to the motion of change and has nothing to do with the spin of the electron.
因为辐射是由于电荷的运动所产生的，而与电子的自旋无关。
The effect of Free Radical Scavenger on space charge distribution in polytethylene during electrical aging;
自由基清除剂对电老化聚乙烯中空间电荷分布的影响
Magnetism produced by electric charge in motion.
电磁性由运动电荷引起的磁性
An electrical charge produced by friction between two objects.
摩擦电由两个物体摩擦产生的电荷
Some of these positive charges are then satisfied by electrons blowing in from wire B.
然后，这些正电荷中的一些电荷由从导线B流入的电子得到补偿。
DHEA is a hormone produced naturally by the adrenal glands.
中DHEA是由肾上腺自然产生的荷尔蒙.
Qualitatively, the equations mean this: Electric fields point out from positive charges and into negative charges, and magnetic fields curl around currents (moving charges).
定性地看，这个方程组意味着：电场是由正电荷指向负电荷，磁场围绕着电流即移动的电荷。
Oxide-Trapped Charges Induced by Electrostatic Discharge Impulse Stress
由静电放电脉冲应力产生的氧化层陷阱电荷
The nucleus is formed of neutrons with no charge and protons with a positive charge
核子是由不带电荷的中子和带正电荷的质子形成的。
detects electric charge; two gold leaves perge owing to repulsion of charges with like sign.
测量电荷；由于带有相似记号的电荷的排斥作用使得分流。
Radio Free Europe and Radio Liberty, RFE and RL
自由欧洲广播电台和自由广播电台
trip free relay
自由脱扣继电器自由释放继电器
Hole- Similar to a positive charge, this is caused by the absence of a valence electron.
空穴-和正电荷类似，是由缺少价电子引起的。
Charge/Spin Transport Properties in Organic Devices;
有机材料器件电荷/自旋输运特性研究
Study on the mechanisam of free radical injury in the side effect of radiation therapy;
荷瘤动物放疗自由基损伤副作用机理研究
Analysis of Dynamic Response for Free Structure Subjected to Intensive Dynamic Loading;
自由结构在强动载荷作用下的动力响应分析
Research on dynamic behavior of free-free tubes impacted laterally;
自由圆管在横向冲击载荷下的动力学行为研究