Earth ' s magnetic field repels most of this onslaught , but some occasionally leaks through as a result of a sudden , explosive release of these particles from the solar wind 地磁场能阻挡大部分的能量，但是当太阳风爆发释放这些粒子时，有些粒子也会偶尔穿过地磁场。
A ferromagnetism rod is chosen as sample which is often used in the experiment of materials mechanics , was placed in the earth magnetic field and was under the application of stress 本论文以材料力学实验中常用的铁磁性杆件作为研究对象，将其放置于地磁场中，受到应力的作用。
Mathematical models can not fully replace real space magnetic . by establishment this system , we can simulate the space magnetic environment , more really than the math model 本文通过对磁环境模拟系统的建立,模拟了卫星在空间的磁场环境,更加真实的复现了卫星在轨期间的地磁场。
Thereby it can be deduced that the vector character and latitude effect of the geomagnetic field exert little influence upon the applicability and reliability of metal magnetic memory testing and diagnostic technique 从而推知：地磁场的矢量特性和纬度效应对金属磁记忆检测与诊断技术适用性和可靠性的影响都不大。
We have analyzed the effect of geomagnetic field and testing environment of fatigue specimen magnetic memory testing signals and the changes of specimen from integer to parting on the basis of the mechanism of magnetism effect 摘要根据磁效应机理，分析了地磁场和检测环境对疲劳试件磁记忆检测结果的影响，以及试件断裂前后磁记忆检测信号的变化。
Fluxgate magnetometer is a kind of vector magnetometer which has the ability of measuring the components of magnetic field directly . the fluxgate instrument is variometer based on magnetization non - linearity of " soft " magnetic material 磁通门磁力仪是直接测量地磁场分量的矢量磁力仪，是一种基于“软”磁材料磁化特性的非线性的地磁相对记录仪器。
Through the approximate handling of geomagnetic intensity and differential riccati equation , the magnetic attitude h control law of the microsatellite in a circle orbit which has external disturb and the structural perturbation is presented 通过对卫星地磁场和微分riccati方程进行近似处理，给出有外界扰动和结构化摄动圆轨道卫星系统的h _磁姿态控制规律。
According to the mean field theory which is based on the phenomenological theory of ferromagnetism , using the conception of effective magnetic field , an effective magnetic field expression for ferromagnetism rod affected by stress in the geomagnetic field is derived 基于铁磁性的唯像理论，根据分子场理论，利用有效场的概念，得到了地磁场中受应力作用的铁磁杆件的有效场表达式。
In order to study small satellite attitude control system , the author first establishes the small satellite dynamics , kinematic models , and gives the theories of the quarternion , then study in - depth of the principles of the active magnetic control 为研究主动磁控小卫星姿态控制系统,首先建立了主动磁控小卫星动力学、运动学模型,并给出了姿态四元数的相关理论。从地磁场模型出发,深入研究了主动磁控的原理。
Since previous studies have focused on theoretical research , space magnetic environment will be affected by many known or unknown factor , such as the electronic devices on satellite would product magnetism by currents through , and this would coupling the earth magnetism 由于以往的研究多集中在理论研究上,空间磁环境还会受到很多已知或未知因素的干扰,如星上电子器件由于电流通过而产生的磁场对地磁场的耦合等。
