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    Optimum parameters of magnetic abrasive machining for inner surface are obtained,which are:magnetic induction strength B = 1.2T, machining clearance A = lmm,machining durationt =4min.
    得出了内圆表面磁性研磨加工的优化参数为:磁感应强度B<1.2T,加工间隙△=1 mm,研磨时间t =4 min,工作轴向振动频率f=10 Hg。
    THE MAGNETIC INDUCTION AT THE FOCUS OF CONIC-ELECTRIC-CURRENT
    圆锥曲线电流在焦点处的磁感应强度B
    By working on the relationship with weld shape, quantity and dimension of inclusion and microstructure, the optimized electromagnetic parameters (electromagnetic stirring frequency, magnetic induction intensity) have been found.
    探讨不同的电磁搅拌参数(磁场搅拌频率f、磁感应强度B)对堆焊焊缝形状、组织以及堆敷金属中的夹杂物数量、尺寸的影响,得出最优电磁搅拌工艺参数。
    2. magnetic field dependence of strain A.
    2.磁感应强度B与磁场H曲线
    And the dependence of magnetostriction, magnetic flux and dynamic magnetic parameter on magnetic field were measured by using multiple parameter magnetic measurement system.
    运用多参数磁测量系统测试了材料的磁致伸缩λ、磁感应强度B、动态磁致伸缩系数d_(33)、增量磁导率μ_(33)和磁-机械耦合系数k_(33),研究了磁特性随磁场H的变化规律,研制出具有实用价值的Sm-Dy-Fe和Tb-Dy-Fe棒状材料。
    Because of ferromagnetic elements, magnetic induction B and magnetic field H is non-linear, which is the main cause that high inrush current occur during the transformer energisation.
    由于变压器铁磁材料的作用,磁感应强度B和磁场强度H呈非线性关系,这也是变压器空载合闸时产生较大励磁涌流的主要原因。
    Through solving the boundary value problem, the magnetic vector potential A is gained. And the expression of magnetic flux density B is got by making use of the relation of magnetic vector potential A and magnetic flux density B. Finally, the equation of the magnetic flux lines is given by way of describing the distributing of the magnetic field.
    通过求解该边值问题得到了相应的矢量磁位A的解析表达式,然后利用矢量磁位A和磁感应强度召的关系求得了磁感应强度B的解析表达式。
    According to the structure and principle of electromagnetic oil production equipment, the distribution situation of the magnetic field of the device has been analysed and computed, the calculation formula of the relevant parameters (the Intensity of Magnetic Induction B , Inductance L ) to the magnetic field has been derived , carry on calculation of magnetic force and sport analysis of characteristic of the electromagnetic oil production equipment at the same time.
    根据电磁采油装置的结构和原理,对电磁采油装置的磁场分布情况进行了分析,对磁场的相关参数(磁感应强度B,电感L)的计算公式进行了推导。
    The computing model equations which include the magnetic flux intensity B of the solubility and the supersolubility of oleic acid and linoleic acid in methanol are first presented by analysis of the experimental data in the article. By analyzing the error of the computing model equations we can make sure that all of the equations are very credible.
    本文通过对应的溶解度与超溶解度数据的回归分析,提出了包含磁感应强度B的磁场作用下溶解度和超溶解度的计算模型,通过对计算模型的方差分析,证明了该方程的可靠性。
    Based on the Biot Law and combined with the Concept of Solid angle, calculating the line integral of current-carrying clcsed circuit which generates magnitic induction B around many closed circuits 1:(1) The integral circuit 1 cross the current-carrying closed circuit L;
    以毕奥定律为基础,结合立体角的概念,计算载流闭合回路L产生的磁感应强度B沿以下几种回路l的积分: (1)积分回路l穿过载流回路L;
    Dynamic magnetic properties of Sendust alloy microalloyed with boron, chromium and maganese were investigated in this paper.
    本文考察了经硼及铬锰微合金化后的Sendust微晶带的动态磁性能,有效磁导率μ_e、铁损P和品质因数Q值随频率f和磁感应强度B的变化特性。
    In this paper we introduce the vector potential C_μ for the electric displa--cement vector D and magnetic induction B, accomplish the quantization of elec-tromagnetic field in nonlinear media by using the method of canonical quanti-zation, and obtain the self--consistent theory.
    本文对电位移矢量D以及磁感应强度B引入失势C_μ,利用正则量子化方法,将非线性介质中的电磁场进行量子化,从而得出自洽理论。
    Magnetization curves and magnetic permeability of amorphous alloys FeCoNi-SiVB,FeSiB,FeCrSiB,FeCoSiB in the hydrostatic pressure range of 0. 0001-2. 4GPa were investigated. Besides,the relation between pressure and the maximum magnetic permeability UUUUmax of the four alloys was obtained with accurate fitting of the polynomial and comparing of computer one by one.
    在0.0001~2.4GPa流体静压力范围选30至36个压力点详细测量出FeCoNiSiVB、FeSiB、FeCrSiB和FeCoSiB四种非晶合金磁化曲线和磁导率曲线的压力效应,并采用多项式精确拟合和计算机逐点比较求出四种非晶合金饱和磁感应强度B_(?)
    we have studied the magnetic parameters dependence on the frequency fand the magnetization field B for four amorphous alloys.
    本文研究了四种非晶态合金的磁性参数随频率f及磁感应强度B的变化规律。
    The results also indicate the effect of the treatment for the compound fertilizer is best when the magnetic induction (B) of the un-uniform steady magnetic field ranges between 100-150mT.
    试验结果还表明:处理复合肥的非均匀稳恒磁场中心的磁感应强度B=150mT效果最好,B=100mT效果次之,故在生产应用中磁感应强度B选取100~150mT为宜。
    The initial ratio of the Mn to Bi and Dy (Sm) raw material is 2:1:0.10. After annealing (350-425°C and for 4 hours) the films has the hcp structure with NiAs type, the c-axis is perpendicular to the plane of those films, the remanent magnetic induction Bt≈3.4-6.5 kG, the intrinsic coercivity Hc≈3-8 kOe, the maximum magnetic energy product (BH)max=13.39MG·Oe.
    Mn:Bi:Dy(Sm)的投料比为2:1:0.10.薄膜经过退出处理(350—425℃,保温4h)后,具有NiAs型hcp结构,C轴垂直膜面,剩余磁感应强度B=3.4-6.5kG,内禀矫顽力_MH_c≈3-8kOe,最大磁能积(BH)_(max)=13.39MG·Oe.
    The paper stadies the electric intensity E and magnetic induction Bin the equation of electric field force F=qE and Ampere force dF= Id l×B.And the examples show that never do we neglect the effect by other part of the force system while evaluating the receiving force of its certain part.
    本文论述了正确理解电场力F=qE、安培力d=Idl×B公式中的电场强度E和磁感应强度B,并举例计算说明:若只求受力系统中某一部分的受力时,不可忽略受力系统中其余部分产生的场对该部分的作用。
    In calculating the magnetic flux density B between two blocks of parallel block capacitors, there are two common solutions, one of which is not correct.
    在计算一平行板电容器的两板间磁感应强度B时,有常见的两种解法,其中一种常见解法是错误的。
    After diffusing at 1150℃ the core loss of the sheets treat-ed by PCVD Si - deposition reduces more about 55 % andtheir flux density increases 5. 42 %.
    厚0.15mm的电工钢经PCVD处理后磁性能得到极大改善,高温扩散后其铁损P_(10/50)下降了55%,P_(15/50)下降了66.2%,磁感应强度B_(5000)提高了5.42%。
    The present paper expounds the Biot-Safar Law and deduces formulas for magnetic induction intensity B induced by several typical electric currents, thus giving out convenient methods of solution.
    本文对Biot-Safar定律的应用进行了详细的讲述,并推证和推出了几种典型电流产生的磁感应强度B的计算公式,重点是给出了解题的简便方法.
 

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