似稳电流场,quasi-static current field
1)quasi-static current field似稳电流场
1.The study of a boreholequasi-static current field boundary value problem in inhomogeneous media is one of the classic problems in electrical logging .在非均匀介质中具有井眼的似稳电流场边值问题的研究是电法测井的经典课题。
2)quasi-stable electric field似稳电场
3)approach to steady current似稳电流
1.The lines of eddy electric field that is excited byapproach to steady current,have two cases:①each of the line is closed;②two ends of the line extend to infinity.似稳电流产生的涡旋电场的场线在空间的分布呈两种典型状况:①场线是闭合曲线;②场线是两端伸向无穷远的曲线。
4)quasi static current field boundary value似稳电流场边值问题
5)quasi stationary current似稳电流，准稳电流
6)steady current field稳恒电流场
1.Approach the reasons for modelling of electrostatic field by thesteady current field;关于用稳恒电流场模拟静电场原因的探讨
2.In this paper,accidental error method and the unitary linear returning method and the duality linear returning method are used to deal with the experimental data based on the experiment of describing electrostatic field simulated bysteady current field.用A类标准不确定度方法、一元线性回归方法、二元线性回归方法分别处理稳恒电流场模拟静电场中得出的实验数据,通过理论分析与数值比较,讨论了三种方法的特点。
3.Several resistance calculation of large uniform diclectric examples by the duality betweensteady current field and electrostatics field were analyzed.利用稳恒电流场与静电场的对偶性,通过几个例子,求解均匀大块导电介质的电阻计算问题,探讨了建立物理模型应该注意的问题。
英文短句/例句
1.Approach the reasons for modelling of electrostatic field by the steady current field;关于用稳恒电流场模拟静电场原因的探讨
2.A Research of the Impacts of Static Magnetic Field and Direct Current (DC) Electric Field on the Al-Si Alloy Solidification Process and Organizational Performance稳恒磁场及直流电场对铝硅合金凝固过程及组织性能的影响研究
3.Effect of Static Magnetic Field and Direct Current Electric Field on Al-Si Alloy Solidification Structure and Properties稳恒磁场及直流电场对铝硅合金凝固组织及性能的影响
4.The problems of steady current in conductors were discussed when the intrinsic Hall electric field existed at the inside of the conductors.本文讨论了导体内部自生霍尔电场存在时导体中稳恒电流的问题。
5.The superficial comments on the EM field of a steady current of dyons in a circle loop关于圆形稳恒电磁流回路的电磁场分布问题的初步讨论
6.The effect of the applied weak steady direct current electrical field on potential differences around abdominal aorta of rabbit外加稳恒直流电场对兔腹主动脉周围电势差的影响
7.The Effect of the Applied Weak Steady Direct Current Electrical Fields on Renovation of Injured and Ischemic Rabbit Myocardium;外加低压稳恒直流电场促进损伤心肌修复的实验研究
8.For aspecial example, the steady current was analyzed for circular section of straight conductor, then the distribution of the current, charge and field quantity were discussed.通过分析载流圆截面直导线中稳恒电流这一特例，讨论了电流、电荷与场量的分布问题。
9.Effect of a Direct Current Constant Magnetic Field on Wear Characteristics for 45~# Steel直流稳恒磁场对45~#钢磨损性能的影响
10.The matter nature of static electric field、stable magnetic field and alternative electromagnetic field;静电场、稳恒磁场、交变电磁场的物质属性
11.On the Application of the U-I Image in Teaching of Regulated Electric Current;谈U-I图像在稳恒电流教学中的应用
12.Effects of the Applied Weak Steady Direct Current Electrical Fields on Endothelial Recovery and Intimal Hyperplasia after Endothelial Removal in the Rabbit Abdominal Artery外加低压稳恒直流电场对兔腹主动脉球囊损伤后内皮修复及内膜增生影响的实验研究
13.Effect on Friction and Wear Behaviour of 45 Steel in Direct Current Constant Magnetic Field直流稳恒磁场对45钢摩擦磨损性能的影响
14.Power Supply Inverted by IGBT of Light Adjustment with Constant Current for Voyage Aid of the Airport;机场助航恒流调光IGBT逆变电源
15.Steady Modeling of 5 Phase Hybrid Step Motor System with Fixed Chopping Frequency and Constant Total Current Driving五相混合式步进电动机恒频斩波恒总流驱动系统的稳态仿真模型
16.digital high steady current source数字式高稳定恒流源
17.A Scheme with Linear Current Stabilized Voltage and Constant Current Power that Is Simple,Economical and Stable,Which Adopts Low-current LED低电流LED应用的简单而经济又强固的线性恒流稳压方案
18.The Stable Electromaagnetic Field s Poyntings Theorem and a New Explain for I~2R Heating Effect;稳恒电磁场中的坡印廷定理和I~2R发热的另一种解释
相关短句/例句
quasi-stable electric field似稳电场
3)approach to steady current似稳电流
1.The lines of eddy electric field that is excited byapproach to steady current,have two cases:①each of the line is closed;②two ends of the line extend to infinity.似稳电流产生的涡旋电场的场线在空间的分布呈两种典型状况:①场线是闭合曲线;②场线是两端伸向无穷远的曲线。
4)quasi static current field boundary value似稳电流场边值问题
5)quasi stationary current似稳电流，准稳电流
6)steady current field稳恒电流场
1.Approach the reasons for modelling of electrostatic field by thesteady current field;关于用稳恒电流场模拟静电场原因的探讨
2.In this paper,accidental error method and the unitary linear returning method and the duality linear returning method are used to deal with the experimental data based on the experiment of describing electrostatic field simulated bysteady current field.用A类标准不确定度方法、一元线性回归方法、二元线性回归方法分别处理稳恒电流场模拟静电场中得出的实验数据,通过理论分析与数值比较,讨论了三种方法的特点。
3.Several resistance calculation of large uniform diclectric examples by the duality betweensteady current field and electrostatics field were analyzed.利用稳恒电流场与静电场的对偶性,通过几个例子,求解均匀大块导电介质的电阻计算问题,探讨了建立物理模型应该注意的问题。
延伸阅读
似稳电磁场交变电流的频率较低时，在电流附近，与之相距比该频率的电磁波在真空中的波长少得多的区域内，可以忽略电磁场的推迟效应，这样的区域中的电磁场即为似稳场或准稳场。根据电磁场理论，变化的磁场要产生电场，变化的电场要产生磁场。前者是电磁感应的作用，后者是位移电流的作用，两者相互作用便产生电磁波,以有限速度&υ(光速)向周围传播, 从而也就产生推迟效应。推迟效应是指在与产生此电磁场的电流i(假定电流所在回路的线度非常小)相距为r的地点,在时刻t由该电流产生的电磁场决定于(t-r/&υ)时，即比时刻t早r/&υ的时刻的电流值。对于频率为f的交流电流,当延迟时间r/&υ比周期T=1/f小很多时，推迟引起的效应很小，可以忽略。忽略推迟效应也就是忽略了电磁波的传播速度，这样的电磁场就近似地由电流按毕奥－萨伐尔定律决定。忽略电磁波的传播效应就相当于将位移电流产生磁场和变化的磁场产生电场这两方面的效应的某一个方面忽略。在实际问题中，可以忽略哪一方面则视具体问题而定。在均匀介质中，当自由电荷的体密度为零时，似稳电磁场满足扩散方程(1)式中γ、μ分别为介质的电导率和磁导率，而在绝缘介质中γ=0，似稳场满足拉普拉斯方程(2)则与恒稳电磁场满足同样的方程。在一定的频率下，式(1)便成为亥姆霍兹方程 (3)式中。导体中的电磁场一般可由方程(1) 或在正弦稳态下由方程(3)以及相应的边界条件、初始条件求解。有代表性的情况是载交流电的粗导线中的电流沿截面的分布不均匀；有交变磁通穿过的导体中的磁通沿截面的分布不均匀，电流密度、磁通密度在愈靠近导体外表面处愈大，愈深入导体内部处愈小，这就是趋肤效应。似稳场概念在建立电工设备的电路变换模型时尤其有用。在工频交流电(50Hz) 时,电磁波在真空中的波长为6000km。一般电工设备的尺寸与之相比是很小的。因此，在尺寸远比其工作频率下电磁波长为小的设备周围的电磁场可以看作似稳场，因而可以用似稳场方法建立各种电工设备实物的集总参数电路模型，计算模型中各电路元件的参数。
