地磁场

Based on diverse working condition featured by dust,abrasiveness,high temperature and strong magnetic field,two or three layers of insulation is considered when designing.

根据电解车间内多粉尘、磨损性、高温度、强磁场的恶劣工作条件，有针对性地设计了两层至三层绝缘层。

In order to clearly understand the nature of exchange bias of the FM/AFMbilayers, we first discuss the influence of the biquadratic coupling field on both thehysteresis loops and the dependence of exchange bias field on the applied magneticfield angle.

为了更加清楚地认识铁磁／反铁磁双层膜中交换偏置的本质，我们首先研究了双层膜界面中双二次耦合对磁滞回线和交换偏置场随外磁场角度变化曲线的影响。

The cutoff frequency of heteromophic waveguide in special structure is solved with the matching of electric and magnetic field on the invented boundary by vector partial differen-tial operator theory.

该文用矢量偏微分算子理论通过虚拟边界的电场和磁场的匹配求解特殊结构的异形波导的截止频率，这一方法可以精确而方便地求出几乎所有模式的截止频率。

We derived Gauss law and Ampere circuital theorem using the concept of solid angle.

用立体角概念和计算式导出高斯定律、安培环路定律，并举实例说明对具有一定对称性的静电场与恒定磁场的场强分布可以较简捷地求

Having elucidated the principles of magnetic stimulation, a macro model of magnetic stimulation of excitable tissue is constructed and a method for systematically computing the magnetic field and the electric field induced by circular coil and 8-shaped coil is put forward.

本文在阐明磁刺激基本原理后，建立了磁刺激可兴奋性组织的宏观模型。系统地推导出圆形、8字形线圈磁场及产生的感应电场的计算方法。

In this limiting process where the closed curve shrinks to a point, size and shape automatically vanish from our considerations and we obtain laws connecting changes of magnetic and electric field at an arbitrary point in space at an arbitrary instant.

在闭合曲线缩成一点的极限情况下，线圈的大小和形状就自然而然地从我们的考虑中消失，于是我们就得到把任何时刻及空间中任何一点的磁场和电场的变化连结起来的定律。

In the presence of magnetic field and Fe3+ with high concentrations, Magnetohydrodynamics effect was caused in the stripping voltemmetry. More metal ions were deposited on the electrode surface, and then the stripping peak current of metal and the sensitivity of the detection were obviously increased.

在金属的溶出伏安法测定中，磁场和高浓度的Fe3+的共同作用产生的磁流体动力学效应使得更多的金属离子沉积在电极表面，使金属的溶出峰电流明显提高，极大地提高了测量的灵敏度。

According to the demand of high magnetic field power supply, reference is increased with a set ramp rate and stops at a set stable value, so reference system is composed of digital setting and digit to analog converting circuit. But the stability of reference is mostly guaranteed by the performance of D/A circuit, so D/A circuit is particularly studied in reference system. The scheme of D/A circuit, the selection of DAC and its voltage reference, hardware anti-jamming design and PCB design are discussed in detail, and software of remote control and PLC are discussed in brief. Zero-flux DC current transformer well satisfies the demands of the high stability of Load current detection unit, so the principle of zero-flux DC current transformer is analyzed; in the mean time a project which detects the long term stability is designed. During 8 hours, analog signal which is detected with high precision digit multimeter is recorded in computer at 1HZ frequency by GPIB communication. The drift error source and related parameters are explained in the compare-amplify part. Detailed subtraction circuit is designed; also amplifier chip and periphery components are selected and verified according to the theory of error analysis.

根据强磁场电源的需求，参考源应按照软件设定的斜率逐渐上升到设定稳态值，则参考源系统应由数字给定和数模转换电路两大部分组成，而参考源的稳定度主要依靠完成数模转换功能的模拟电路的性能来保证，因此本文对参考源系统的研究以数模转换电路为重点，分别从电路方案的确定、数模转换芯片及其基准电压源的选取和验证、电路板硬件抗干扰和PCB设计几方面进行了论述，然后对数字给定部分的远控组态和PLC程序设计作了简要介绍；采用零磁通原理的直流电流转换器很好地满足了对负载电流检测单元高稳定度的需求，本文详细分析了零磁通检测的原理，并在选定此种类型电流转换器的基础上设计了一套检测长期稳定度的方案，8小时内以1秒为采样周期，通过计算机Labview程序和高精度数字电压表的GPIB通讯，将被高精度数字电压表数字化后的模拟信号采样值连续记录至计算机中；比较放大环节简要阐述了漂移产生的原因和相关参数指标，确定了具体的减法电路形式，并根据误差分析理论对运算放大器和外围元器件进行了选取和验证。

In addition, the ring current is driven earthward (which energizes its particles further), temporarily modifying the field around the Earth and thus shifting the aurora closer to the equator.

此外环电流被逼近地球，进一步加强了其粒子能量，暂时地改变地球附近的磁场，使得极光向赤道靠近。

Experimental results disclosed that the upper limit on the photon mass was 1.2×10-51g, and this figure, collected by Particle Data Group in 2004, has improved almost 20-fold compared with that of the static torsion balance experiment.

该数值不仅将国际上扭秤静态实验结果提高了约20倍，而且调制的实验方法还有效地克服了扭秤静态实验中实验结果对宇宙磁场矢势与地球自转轴之间夹角的依赖关系，并且极大地抑制了各种周日背景干扰的影响，提高实验的置信水平，该实验结果于2004年被国际粒子物理数据组收录。

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。