地磁场

In chapter 2, the methods of spin dynamical simulation and fast Fourier transformation are introduced.

第二部分共有三章：第一章，我们简要地介绍该领域的一些背景和一些前人的工作；第二章，我们介绍自旋动力学模拟的方法和模拟计算中要用到的快速傅立叶变换方法；第三章，我们提出了两种有效钉扎Spin vortex的办法，一个是通过打孔的办法，另一个是通过小面积加垂直强磁场的办法。

Although people with piercings should have no problem sleeping on the bed, Ruijssenaars advises them against entering the magnetic field between the bed and the floor.

尽管携带着发声物体的人睡在这张浮床上没有问题，但鲁基森纳斯建议他们还是避免身处在床和地面的磁场之中，因为他们会发现发声器传出的声音被磁体扯向了一个方向。

Permanent magnet synchronous motors have been widely used as AC drives over the last two decades due to their high efficiency, high power density and no dc field winding in the rotor. It is well known motion control of PMSM requires accurate position and velocity signals to realize field orientation.

永磁同步电动机由于无需励磁电流、运行效率和功率密度都很高，在过去的二十年里已被广泛地应用在交流调速传动中，但它的高性能控制需要精确的转子位置和速度信号去实现磁场定向。

The traditional stability diagram for lattice design described in the space of the gradients of a focusing and a defocusing magnet is extended to study more complicated cases, in which the basic cell included in the super-periodic structure has more than two gradients as variables.

将环形加速器磁聚焦结构设计中，传统的聚焦和散焦磁铁强度空间中的稳定图方法，应用到更复杂的含有两个以上磁场梯度变量的超周期结构中，从而更深入地理解结构共振的形成机制和隐含的物理意义。

Using numerical simulation method, the variation of magnetic field-strength along the axis of helical current with the helical pitch and position is analysed in detail.

应用数值模拟的方法，细致地分析了螺旋线电流轴线上磁场随螺距和位置的变化关系。

So a measurement systemhas been desiged and set up with which the angle between crystal axis and magnetic field can bechanged conveniently.

本文详细地研究了YBCO外延薄膜临界电流密度与磁场和角度的关系和外场中的电阻转变展宽及其各向异性。

The magnetic core of the Earth is moving, literally changing directions inside the Earth.

地球核心的磁场正在移动，不加夸张地说，地球内部的方向在发生变化。

Secondly, the single domain model of spin-valve is investigated. The calculation results of the spin-valve magnetic behaviour using single domain model by energy minimizing method consist with the experimental results.

其次，系统地研究了自旋阀的单畴模型，运用能量极小的方法计算得到了自旋阀的磁场响应曲线，与实验结果吻合。

To use the field concept and its language consistently, we must regard the magnetic field as a store of energy. Only in this way shall we be able to describe the electric and magnetic phenomena in accordance with the law of conservation of energy.

为了一致地应用场的概念和它的语言，我们必须将磁场当作能的储存所，只有这样才能使我们能够按照能量守恒定律来描述磁和电的现象。

We analyze the magnetic storm on April 11, 2001 to investigate how the compression of the magnetopause would influence the magnetic field in the geospace and on the ground...

集中分析2001年4月11日的磁暴事件，研究当磁层顶发生强烈压缩以后，在地球空间和地面上产生的磁场影响。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。