查询词典 magnetic head

The characteristics of the MHD structure observed in the soft x-ray tomography are as follows. It is constructed with m=2 mode oscillation, so that the magnetic surface is made up of two islands. The structure of the magnetic surface is relatively stable. It rotates in the direction of the electron dia-magnetic drift, and the rotation frequency is the half of the oscillation frequency of soft x-ray signals.

通过SX反演图象分析，MHD型磁面结构的特点：一是m=2模的振荡构成，因而此磁面始终有两个岛组成；二是磁面结构相当稳定，在MHD放电过程中没有明显变化；三是磁面结构整体沿电子逆磁方向极向旋转，旋转的频率是软X射线测量的信号频率的一半。

In Newtonian mechanics, the motion of the charge in magnetic field is in equidistance helical line. It is composed of the uniform motion in magnetic field and the circular motion vertical to the magnetic field.

带电粒子在磁场中的运动，如果用经典力学分析，它做等距螺旋运动，是在垂直磁场平面内两个相互垂直方向的简谐振动和沿磁场方向匀速运动的合成。

The main contents of this dissertation are as follows:(1) According to involved theories of ferromagnetics, the microscopic mechanism of domain structure is analyzed systematically; through the movement variation of domain structure, that is the movement of domain wall and rotation of magnetic moment, the magnetization process is illustrated in an applied magnetic field. Meanwhile, by the use of energy methods, a study is performed on influencing factors of domain movement including stress, dope, scattering field, etc. The influence of various energies is dealt with on the magnetic behavior and parameters of ferromagnetic material; the corresponding theories of the spontaneous magnetization and technical magnetization are also discussed.

本文以此为研究背景，通过理论分析和模型试验，系统地研究了钢结构全磁通应力无损检测技术的基本理论和应用方法，主要研究工作如下：(1)根据铁磁学的相关理论，分析了铁磁材料磁畴结构产生的微观机理，并通过对磁畴结构运动变化规律，即磁畴壁移动和磁矩转动规律的研究，分析了外磁场作用下铁磁材料的磁化过程与一般规律，同时采用能量分析方法，研究了影响铁磁材料磁畴运动的主要因素，包括应力、掺杂和弥散磁场等，探讨了各种能量对铁磁材料磁行为和磁参量的影响，研究了相应的自发磁化理论和技术磁化理论等。

The mostly assignment of this task is the accomplishment of computer simulation of magnetic field and electric field induced by magnetic coil in magnetic stimulation system based on MATLAB GUI interface.

本课题的主要任务是完成磁刺激系统中磁线圈磁场特性及感应电场仿真基于MATLAB的GUI界面编制

The transient air gap magnetic fields under different conditions are also calculated and analyzed. The novel finite element method directly using magnetic induction as unknown variable has many advantage. It is analyzed theoretically in detail. Nonlinear eddy current field equations and finite element equations using magnetic induction as unknown variable are developed.

直线电机的磁场是一非均匀、非线性的涡流场，文中对非均匀磁场及材料的非线性进行了分析，提出了相应的解决办法，采用以向量磁位为求解量的传统有限元法，对不同合闸角下筒式复合次级圆筒型直线感应电机的瞬态特性进行了计算与试验分析，对不同条件下瞬态气隙磁场进行了研究。

"Geomagnetics: Branch of geophysics concerned with all aspects of the Earth's magnetic field, including its origin, variation through time, and manifestations in the form of magnetic poles, the magnetization of rocks, and local or regional magnetic anomalies"

地磁学地球物理学的一个分支。研究范围涉及地磁场的各个方面，包括起源、随时间的变化和形成磁极的现象、岩石的磁化，以及局部或区域性地磁异常等。

"Geomagnetics: Branch of geophysics concerned with all aspects of the Earth's magnetic field, including its origin, variation through time, and manifestations in the form of magnetic poles, the magnetization of rock s, and local or regional magnetic anomalies"

地磁学地球物理学的一个分支。研究范围涉及地磁场的各个方面，包括起源、随时间的变化和形成磁极的现象、岩石的磁化，以及局部或区域性地磁异常等。

"Geomagnetics: Branch of geophysics concerned with all aspects of the Earth's magnetic field, including its origin, variation through time, and manifestations in the form of magnetic pole s, the magnetization of rocks, and local or regional magnetic anomalies"

地磁学地球物理学的一个分支。研究范围涉及地磁场的各个方面，包括起源、随时间的变化和形成磁极的现象、岩石的磁化，以及局部或区域性地磁异常等。

Permanent magnet can provide for a maximum intensity of the magnetic field around Tesla, Helmholtz coils and solenoids can provide alternating magnetic field or relatively uniform magnetic field, and solenoids can also be used to provide strength for the solenoid around 10 Tesla.

其中永磁铁能够提供强度最大为1特斯拉左右的静磁场，亥姆霍兹线圈和螺线管可提供交变磁场或相对均匀的磁场，也可用螺线管提供强度为10特斯拉左右的超强静磁场，电磁铁则可产生强度为几百毫特斯拉或特斯拉级的静磁场。

The review includes:(1) magnetic sensor new materials;(2) hexagonal system microwave ferrite materials;(3) large capacity spin valve magnetic memories;(4) magnetic thin tape and film transforms;(5) large power application of ferrite materials.

其内容包括：(1)磁传感器新材料；(2)六角晶系微波铁氧体材料；(3)大容量自旋阀磁存储器；(4)磁薄带和磁薄膜变压器；(5)大功率应用的铁氧体材料。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。