受磁

Results/Conclusion Their complex potential expressions of matrix of piezoelectric/piezomagnetic composites are derived, and the evidence for energy release rate of piezoelectric/piezomagnetic composites under the combined action of antiplane shear and inplane electrical field and magnetic field is provided.

结果／结论给出了压电压磁弹性复合材料基体的复式表达式，并为计算受反平面剪切和平面内电场、磁场共同作用下的压电压磁复合材料能量释放率提供依据。

This paper systematically introduces the basic principle and advantages of magnetic particle inspection, the stress analysis of the oil drill collar and the magnetic particle inspection for the screw thread of the oil drill collar.

本文系统介绍磁粉检测基本原理及优点，石油钻铤的受力分析，石油钻铤螺纹的磁粉检测。

By fracture mechanism and dislocation theory,the polymerization model of magnetic domain wall was presented on the basis of the analysis of microstructure changes.

研究了铁磁构件在受载时产生磁记忆效应的机理。结合试件的断裂机制和位错理论，分析了试件组织的微观变化。

In two cases with uniform initial By distribution, the recurrent f ormation and successive ejection of flux rope structures are illustrated un der the action of plasma inflow caused by the dawndusk electric field. It is n oticeable that in the cases with the modificative terms, a reduction of the aver aging magnitude of peak pressure and a considerable enhancement of the av eraging strength of core magnetic field are exhibited for the multiple magneti c structures.

对于 初始By分量为均匀分布，受晨昏电场产生的边界入流作用，磁尾通量绳结构重复形成与逐一排放的两个算例，计入修正项后，多重磁结构峰值压强的平均值降低，核心场的平均值明显增大。

According to the effective field expression, the phenomenon that the tangential component of magnetic leakage field has maximum value and the normal component of magnetic leakage field acquires zero value at the stress concentration zone of positive magnetostriction ferromagnetic materials is explained theoretically.

它的物理基础是，铁磁性工件在运行时，受工作载荷和地球磁场的共同作用，在应力和变形集中区域内会发生具有磁致伸缩性质的磁畴组织定向和不可逆的重新取向，而且这种磁状态的不可逆变化在工作载荷消除后不仅会保留，还与最大作用应力

The horizontal and vertical first derivatives of magnetic anomalies of an infinite cylinder are calculated by the cosine transform method, in which the maximum errors are -028 nT/m and 047nT/m, respectively and the percent errors are generally within -357%～327% and -194%～188%, respectively except several data of the boundary and part are bigger because of remains of Gibbus effect. The calculating curve and theoretical curve are approximately coincident, and there is no influence by effective magnetic dip angle in computing.

利用余弦变换法计算的无限长水平圆柱体磁异常水平和垂向一阶导数的最大误差分别为-028 nT/m、047 nT/m；水平一阶导数的误差一般在-357%～327%之间，垂向一阶导数的误差一般在-194%～188%之间；计算的磁异常一阶导数值与理论值大致重合，而且不受有效磁化倾角的影响。

For mechanical capability of busway, the magneto-structure coupling analysis is used and computation program is compiled by using apdl language of ANSYS in this paper, then the maximum dynamical force and displacement in X direction can be obtained under the condition of three phases short circuit to earth.

对低压母线槽的力学性能，本文运用了磁-结构耦合分析的方法，大量运用ANSYS的apdl语言，编制了计算程序，得出母线槽在三相对地短路情况下所受的最大电动力及X方向的最大位移，形成了磁-结构耦合分析模块。

On the basis of HGMS tests of Jiepai kaoline, General Factory of Jiepai Ceramics invited us to design a QY-800 industrial cyclic HGMS separator as is the largest one of HGMS separators ever designed before in our country.

在完成界牌高岭土高梯度磁选试验的基础上，受界牌陶瓷总厂委托设计了一台QY-800工业型周期式高梯度磁选机，这是迄今为止国内设计的最大规格的周期式高梯度磁选机。

Based on the analysis of the state of the forces borne by the transmission shaft of magnetic separator , the selection of tolerance in design and its effects on performances and serving life of magnetic separator are described.

在分析磁选机传动轴的作用及受力状态的基础上，论述各公差选择原则及对磁选机性能和使用寿命的影响。

This thesis proposed the design and implementation of an ASIC for the motor control with DTC technology. Note that this ASIC is implemented by cell-based Design style with Verilog language.The basic principle of the Direct Torque Control is to select the switch sequence of the inverter. Those switches will control the magnetism and torque of the stator, to induce a fast response of the induction motor. Furthermore, the d-q axle's static coordinate, which is transferred from both the three-phase current and voltage, is used to compute the stator's magnetism and torque. By comparing with original values, those magnetism and torque will be calculated and set to new data. Then the switching table and the hysteresis controller are decided with the new data to generate a voltage vector and to control the stator magnetism and torque.

直接转矩控制的基本原理为经由侦测马达定子磁通与转子转速，来适当的选择变频器功率电晶体的切换状态，以获得快速且不易受外在环境影响的马达控制响应；首先，根据量测三相电流与利用变频器的切换状态取得马达的三相电压，将其转换至d-q轴静止座标，然后藉此估测马达的磁通量与转矩量，再分别与侦测的定子磁通量和转矩量比较后，得到定子磁通量与转矩量比较的结果，再利用DTC电压向量切换表(DTC Voltage Vector Switching table)，依定子磁通与转矩的比较值及马达所在的角度位置，来选择一个适当的电压向量，进而依切换顺序来激发功率电晶体，达到控制感应马达的目的。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。