查询词典 magnetic

On the basis of magnetic theory and electrode theory of gas molecule and the reaction mechanism of producing the air plasma body by surface discharging,this paper studies a new kind of magnetic-electrode plasma body purification device,and tests it in a test of engine platform.

依据气体分子磁性理论与电极性理论及沿面放电方式产生空气等离子体的反应机理，试制出一种新型的磁电极化等离子体净化装置，并在发动机台架上进行了试验。

Magnetic field curve distortion is found at the position of magnetic pole edge in Hall effect experiment, using HL-5 Hall effect testing instrument.

在利用HL-5霍尔效应测试仪测量磁场的实验中，发现有些仪器的测量曲线在磁极边缘附近存在畸变。

There is however a gap in the magnetic circuit between the pole piece and armature so a force is created which acts to close this gap and complete the magnetic circuit.

然而在磁回路的电机片和电枢之间有一个间隙，于是产生一个力，其作用是关闭这个间隙以完成这个磁回路。

At low temperature, both the positive and negative magnetoresistance effect can be observed for all the samples. The s-d exchange interaction induced spin-splitting, the formation of bound magnetic polarons, and the magnetic field suppressed spin-disorder scattering were competed for the MR behavior.

另外，在低温时所有样品都表现出较大的正磁电阻，我们认为正磁电阻效应是由于s-d电子交换相互作用引起的自旋劈裂造成的，而高场时出现的负磁电阻效应则可能归因于磁场导致的束缚磁极化子的破损和自旋散射的抑制。

We conclude that the s-d exchange_interaction_induced spin-splitting gives rise to positive MR, while the formation of bound magnetic polarons and the magnetic field suppressed spin-disorder scattering are responsible for the negative MR behavior under high field.

另外，在低温时所有样品都表现出较大的正磁电阻，认为正磁电阻效应是由于s-d电子交换相互作用引起的自旋劈裂造成的，而高场时出现的负磁电阻效应则可能归因于磁场

Based on a large number of scientific and technical documents, this paper generalizes the basic principles and application status of magnetic acoustic emission and makes a set of experiments by the hardware and software that the author designs, and obverses some typical rules of magnetic acoustic emssion.

铁磁材料都可以用磁声发射法来测量其应力大小，为此，本文在查阅国内外大量相关科技文献资料的基础上，归纳总结了磁声发射技术基本原理和应用状况，用自行设计制作的硬件和软件进行一系列实验，观测到一些典型的MAE现象。

The result shows that the mechanical strength and the thermal stability of bonded hybrid magnet are improved markedly with addition of ferrite in Nd-Fe-B powder,whereas its magnetic performance is reduced slightly.And the temperature coefficient of coercivity with zero is obtained in hybrid magnet with 87% ferrite and 13% HDDR Nd-Fe-B.Due to the magnetic dipole field between the differe...

实验结果表明：随着铁氧体磁粉的加入，复合磁体的磁性能虽略有降低，但其力学性能及热稳定性均有大幅度改善，特别是在铁氧体含量为87%时，复合磁体内禀矫顽力温度系数为零；不同磁粉间静磁场的存在，使得复合磁体在铁氧体含量低于70%时，其磁性能大于平均值，而大于70%时则小于平均值。

The first control strategy has the disadvantages such as a large amount of computations, inherent pull-out torque, difficulties in realizing the adaptive control and so forth. For the rotor flux-oriented control, changing of load or the rotor speed will result in increased or decreased torque winding currents, which will change the magnetic field distribution in the air gap. Assumption that magnetic field is approximately equal to that generated by torque windings will affect the levitation performances.

分析表明：气隙磁场定向控制中存在最大转矩限制、非线性机械特性，难以实现自适应控制等问题；对转子磁场定向控制而言，当负载或转速变化时，由于转矩控制绕组转矩电流变化将导致气隙磁场发生改变，如果仍以转子磁场近似替代气隙磁场作为悬浮依据，必然影响到悬浮控制性能。

First, the effects of magnetic RAM relaxation time and the rise-time of incident pulse signal on reflection signal are discussed, the relationship between the rise-time of incident pulse and relaxation time based on the energy of reflection signal is revealed. Then, the effects of magnetic hysteric, susceptibilities and saturation upon reflection signal are analyzed, the results reveal the reflection of RAM target and UWB signal design. In the meantime, dielectric relaxation time effect about dielectric RAM target is analyzed simply, and the effects of relaxation time and the width of incident pulse upon reflection signal are probed. Finally, a few RAM targets are measured in the chamber using the impulse radar experiment system which is developed by the team of anti-stealth impulse radar on Department of Electrical Engineering, National University of Defense Technology. The experimental results show the similarity of the rule of echos with the theory. From the compared results of different tagets, we concluded, compared with 15% wideband sinusoidal signal, the impulse signal has increased 10～12dB energy from the same loaded RAM target; this, in turn, shows the nonlinear effects of RAM to the echoes, and the potentiality of the impulse signal to RAM targets.

首先分析了磁性RAM的弛豫时间及入射脉冲信号的上升时间对反射信号的影响，从反射信号能量角度出发，给出了入射脉冲上升时间与弛豫时间的关系；接着分析了磁性RAM的磁滞特性、磁化率及磁化强度对反射信号的影响，给出了RAM目标辐射和有关UWB信号设计的一般性结论；其次，对介电RAM的弛豫时间效应作了简单的分析，探讨了介电弛豫时间及入射脉冲宽度对反射信号的影响；最后利用国防科技大学电子技术系&反隐身冲激雷达技术研究组&研制的冲激雷达实验系统，在微波暗室中对几种不同的RAM目标进行了测量，结果表明：其反射波形的基本规律与上述理论分析相一致；从各种不同目标回波的能量对比结果得出，涂覆RAM目标对冲激信号的吸收比15％带宽的正弦信号要小10～12dB，证实了RAM的非线性效应对回波的影响，也证实了冲激信号反隐身的潜力。

NdFeB permanent magnets with high magnetic energy product, high application temperature and high corrosion resistance of Zhenghai Group are one of the important parts to directly drive the permanent magnetic wind motor sets.

正海集团自行设计制造了多条大型机电一体化生产线，应用于荫罩、永磁体等产品的生产，正海集团生产的高磁能积、高使用温度、高耐腐蚀性钕铁硼永磁体，是直接驱动永磁式风电机组的重要部件之一，正海集团在机械、自动化、永磁材料等领域的研发、设计和制造的专业人才达到150名，具备同风机制造企业进行合作的人才和原材料优势。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。