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 the magnetic vector 矢量磁(13)磁矢势(5)
 矢量磁
 2. The boundary value problem on the magnetic vector potential A is derived by introducing the magnetic vector potential A and using Maxwell's equations. 2．通过引入矢量磁位A并利用麦克斯韦方程组推出了以矢量磁位A为求解对象的边值问题。 短句来源 The boundary element equations, represented by the magnetic vector potential in exterior region of an axisymmetrical transverse magnetic model and combined with the impedance boundary condition formulation,for electromagnetic field problems in coreless induction meting furnace are direved. 本文用轴对称横向磁场(TM)模型的矢量磁位的外部区域边界积分方程,结合阻抗边界条件,得到了描述无心感应熔炼炉电磁场问题的边界元方程。 短句来源 A mathematical model was deduced to describe the finite element method(FEM) simulation of induction heating with the magnetic vector potential with the ANSYS software. 采用有限元分析法和ANSYS软件,引入复矢量磁位,推导了感应加热有限元模拟的数学模型。 短句来源 Taking the conjugate variation of the simplified vector potential,combining the magnetic vector potential and electric one,as the weighting function,a finite-element method is first developed for three-dimentional travelling- wave eddy-current field and thus the calculation problem of the eddy-current field, accounting for the action of shield but neglecting the action of field winding,is effectively solved. 首先通过引入表征矢量磁位和标量电位相组合的简化矢量位,取其共轭变分为权函数,提出了一种求解三维行波涡流场的有限元法,有效地解决了考虑屏蔽层作用但忽略励磁绕组涡流效应的涡流场计算问题。 短句来源 Two kinds of methods particularly suitable to shape optimization, semi-analytic method and local difference method, are proposed to calculate the first-order derivatives of magnetic flux density with respect to the design variables on the basis of solving sensitivity equations of the magnetic vector potential. 在用直接法求解矢量磁位灵敏度方程的基础上 ,给出适合形状优化的磁通密度灵敏度分析的两种方法———半解析法和局部差分法。 短句来源 更多
 磁矢势
 Differential Equation of the Magnetic Vector Potential in Anisotropic Medium and Its Solution 各向异性磁矢势A的微分方程及其解 短句来源 In this paper we introduced that the magnetic vector potential was used for computing the magnetic fields due to current distribution of a circular loop antenna and derived the relations between impedance and wavelength. 本文简述了从环形天线的磁矢势,求出电流产生的场,并着重导出了阻抗与波长的关系。 短句来源 This paper gives a method to graph magnetic induction line in a plane magnetic field through calculating contour of the magnetic vector potential of steady current's magnetic field. 本文给出了一种通过计算稳恒电流磁场的磁矢势的等值线族，得到具有平面场形式的磁场的磁感应线的方法 短句来源 Aimed at the detector of a capacitance proximity fuze, this paper discusses the basic characteristics of its detection field according to its operating frequency and the basic structure features of electrodes through setting up the models of the magnetic vector potential and scarlar potential of the capacitance detection field. After demonstrating its operating field zone, this paper comes to the conclusion that the field zone in which the capacitance fuze works is a quasi electrostatic field. 以电容近炸引信探测器为研究对象 ,通过建立该电容探测场的磁矢势及标势 ,依据其工作频段及电极的基本结构特征 ,讨论了电容引信探测场的基本特征 ,证明了它的工作场区 ,得出了电容引信工作于准静电场的结论 短句来源 Based on solving the magnetic vector potential of a ferromagnetic cylinder,the laws of eddy current density and power loss of the cylinder in an alternating magnetic field perpendicular to its axis are derived. 从求解铁磁圆柱体的磁矢势出发,推导出了铁磁圆柱体置于垂直柱轴的交变磁场中柱内产生的涡旋电流密度及损耗功率的规律. 短句来源
 “the magnetic vector”译为未确定词的双语例句
 Established satellite kinematic and dynamics equation. Use the magnetic vector for the observation information, the paper estimate the location and rate of the satellite, analysis of simulation results and the sources of error. To further enhance navigation accuracy, the paper study the Unscented Kalman Filter, compare with the Extend Kalman Filter. 其次,基于磁环境模拟系统的测量数据,本文研究了扩展卡尔曼滤波算法,建立了卫星的运动学和动力学方程,以地磁场矢量为观测信息,对卫星位置速度进行了估计,并分析了仿真结果及误差来源,为了进一步提高导航精度,本文又研究了Unscented卡尔曼滤波算法,给出了原理及步骤,并与扩展卡尔曼滤波进行了比较分析。 短句来源 According to the TDIE method, the scattered field can be expressed by use of the magnetic vector and electric scalar potentials and they can be calculated by using the surface current. 其次，使用著名的矩量法来计算面电流，其中选择了一组特殊的基函数。 根据TDIE法，散射场可以用磁矢量位和电标量位来表示，后者可利用面电流来计算。 短句来源 It is proved that in magnetic flux leakage testing, across the interface between magnetoconductive medium with different permeabilities, if the continuity conditions for tangential component of magnetic vector potential was got strengthened, the continuity condition of the normal component of the magnetic vector potential would be the natural interface conditions provided automatically by means of inherent in the variational procedure. 证明了在漏磁检测分析中,如果强加不同导磁介质区域的交界面处磁矢量位的切向连续性条件,则磁矢量位的法向分量连续性条件是变分过程中自动得以保证的自然交界面条件. 短句来源 Multipole Moment Expansion of the Magnetic Vector Potential in Anisótropic Media 在各向异性介质中磁向量势的多极矩展开 短句来源 By means of calculating the magnetic vector potential approximately, the magnetic field distribution of the closely round solenoid carrying static current is obtained. 本文通过近似计算磁场矢势,求得载流密绕螺线管的磁场分布。 短句来源 更多

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 the magnetic vector
 The rotation, during metamorphism, of magnetic grains (magnetite, ilmenite etc.) enclosed in the lenticular rock-forming minerals causes deviation of the magnetic vector from its original position. A new instrument for measuring the magnetic vector of rock specimens while they are being heated is described and the performance and advantages of the instrument are discussed. We confirm the fact that the magnetic vector makes a small angle (25 °) with the long axis of the prominence. The inclination of the magnetic vector increases from ψ = 0 ° at r = 0 to ψ = 90 ° at the penumbra-photosphere border, its variation across the spot is not consistent with a purely radial (poloidal) field. The averaged fluid velocity corresponds to the magnetic vector-potential, the perturbation of the averaged pressure to the scalar potential, and the body force due to nonuniformity of Reynolds stresses corresponds to the electric field. 更多
 The system of transfer equations of the four Stokes parameters I, Q, V, V under the action of the magneto-optical effect (i.e. Unno-Beckers equations) are numerically solved in this paper for the magneto-sensitive lines FeI λλ 6302.499 and 5324.191 with an appropriate sunspot model. The errors in the expressions of the. coefficients ρ_R and ρ_W in Beckers' paper [2] have been corrected for. From the results of calculations some properties of the profiles of the Stokes parameters in connection with the magnetic... The system of transfer equations of the four Stokes parameters I, Q, V, V under the action of the magneto-optical effect (i.e. Unno-Beckers equations) are numerically solved in this paper for the magneto-sensitive lines FeI λλ 6302.499 and 5324.191 with an appropriate sunspot model. The errors in the expressions of the. coefficients ρ_R and ρ_W in Beckers' paper [2] have been corrected for. From the results of calculations some properties of the profiles of the Stokes parameters in connection with the magnetic vector have been found. Our computations also show that the magnetooptical effect should be taken into consideration in the measurements of vector magnetic fields. In the fourth section of this paper we have established a simple and convenient method for obtaining the information of the magnetic vector (including the strength of magnetic field B, the angle between the direction of magnetic field and the line of sight γ as well as the azimuth of magnetic field X) from the profiles of the Stokes parameters. Our method consists of the following three steps: (1) The value of B can be determined from the distance of the highest point in the V-profile from the central line. (2) When B becomes known, γ may be found from V_(max), i.e. the maximum value of V. (3) When both B and γ are known, one may obtain the angle X from Q_0, i.e. the value of Q at line center. 本文在考虑磁光效应的条件下,选用合适的太阳黑子模型,对Fel λ6302.499等磁场敏感谱线,求得四个斯托克斯参数转移方程组的数值解。此外,本文建立由斯托克斯参数轮廓直接推求向量磁场信息(包括磁场强度、磁场方向与视线的夹角以及磁场方位角)的方法。 The process of karst development in carbonate rocks is the result of combined effect of various factors. The paleoclimate and paleoenvironment acted as the major factor controlling the paleokarst development in Hebei Province. The southern part of Hebei Province during the Eogene period of the Himalayan phase is characterized by tropic-subtropic climate. According to the magnetic vector values obtained from the Paleomagnetic survey, the ancient latitude of Xingtai-Neiqiu area in Hebei province was calculated... The process of karst development in carbonate rocks is the result of combined effect of various factors. The paleoclimate and paleoenvironment acted as the major factor controlling the paleokarst development in Hebei Province. The southern part of Hebei Province during the Eogene period of the Himalayan phase is characterized by tropic-subtropic climate. According to the magnetic vector values obtained from the Paleomagnetic survey, the ancient latitude of Xingtai-Neiqiu area in Hebei province was calculated to be 20.6°, about 16°S apart from the present latitude. The Eogene period was the period dominated by paleokarst development in Hebei Province. Karst caves at various levels formed during that period have been found scattering in the Taihang Mts, the Yanshan Mts and the hidden ancient mountains thousands of metres deep under the Hebei plain. The paleokarst not only existed in Hebei Province but also developed intensely. Therefore it cannot be denied that there were ancient karsts in North China under the con-dition of modern climate. However, paleokarst features cannot be confused with modern karst ones. 碳酸盐岩的岩溶发育过程是诸多因素综合作用的结果。古气候环境对河北古岩溶发育起到控制作用。喜山期早第三纪河北南部显示了热带—亚热带气候特征,根据古地磁测得的磁矢量值推算河北邢台内邱一带古纬度值为20.6°,要比现今纬度靠南16°左右。早第三纪是河北古岩溶发育形成的主要时期,该期形成的数层溶洞分布于太行山,燕山区和河北平原几千米深的古潜山。河北存在古岩溶而且发育的还很强烈,因此,不能用现代气候去否认北方曾有过古岩溶的事实,也不能把古岩溶与现代岩溶混为一谈。 By means of calculating the magnetic vector potential approximately, the magnetic field distribution of the closely round solenoid carrying static current is obtained. 本文通过近似计算磁场矢势,求得载流密绕螺线管的磁场分布。 << 更多相关文摘
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