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- grads of earth magnetic field 地球磁场梯度
- horizontal component of earth magnetic field 地磁场水平分量
- On Teaching of Physical Methods from the Issue of Earth Magnetic Field 从地磁场问题谈物理学方法教育
- A device used to determine geographic direction, usually consisting of a magnetic needle or needles horizontally mounted or suspended and free to pivot until aligned with the magnetic field of Earth. 指南针用于确定地理方向的设备，通常包括一个或多个水平安装或悬挂的磁针，可在枢轴上自由活动直到与地球磁场在一条线上
- Our research may also eventually learn more about the causes of changes and reversals of Earth's magnetic field. 我们的研究也会最终了解更多的有关地球磁场变化和倒转的知识。
- During the solar eclipse time, the earth magnetic field is not stable, and harmful ultraviolet as well as high-energy photons are very active. 因为日食期间，地球的磁场将会非常不稳定，同时及其有害的紫外线和高能粒子流将在地球大气相当活跃。
- Fluxgate Azimuth Sensor is a sensor for azimuth location by detecting the magnetic field of earth basing on fluxgate principle. 磁通门方位传感器是基于磁通门原理的一种可以检测地球磁场从而确定方位的传感器。
- These torrents of ionized gas and magnetic field energy can weigh billions of tons and stretch to many times the size of Earth. 这些携带着高能磁场的等离子气体的急流包含数十亿吨中的物质，可以延伸到数倍地球大小的范围。
- Pre polarizing and spin echo method are often used in NML tool, and the magnetic field used has been changed from primitive earth magnetic field to man made magnetic field. 核磁测井仪中多采用预极化方式或自旋回波法，所用的磁场已从最初的地磁场演变到现在所用的各种人工磁场，所用的测量方式要与采用的磁场设计相适应。
- An iron case will keep the Earths magnetic field away from the compass. 铁箱能使地球磁场影响不了指南针。
- Through the disturbances of earth's magnetic field caused by passing vehicles,a wireless vehicle detection node based on Magnetoresistive Sensors is designed in this paper. 利用车辆经过引起的地磁场的扰动,设计了一种置于交通路口的基于磁阻传感器的车辆检测无线节点。
- They can track the earths magnetic field as sensitively as a compass needle. 它们对地球磁场也十分敏感，如同使用了指南针。
- Dr.Sabine Stanley, an Assistant Professor of Physics at the University of Toronto, says the reversal of Earth's magnetic field may cause us some trouble. 当然，地球上的东西在过去数千年中都非常稳定，使人类文明得以立足。
- The machine cast up a big heap of earth. 机器卷起了一大堆泥土。
- It shows the presence of a magnetic field. 这表明有磁场存在。
- The bulldozer leveled the mound of earth. 推土机把土堆铲平。
- The incoming streams of solar protons and electrons are affected by the earths magnetic field in a complicated way. 太阳的质子和电子的入射流，受到地球磁场的复杂作用。
- The farmer examined a handful of earth. 那个农夫察看了一把泥土。
- Dynamic adjusting gyroclinometer is a non-magnetic device, which can be used conveniently in wellbore measurement and orientation in strata where earth magnetic field are shielded or disturbed. 动调式陀螺测斜系统是一种非磁测量仪器系统,可以方便地用于大地磁场受到屏蔽或干扰的地层中井眼轨迹的测量和定向。
- A device used to determine geographic direction,usually consisting of a magnetic needle or needles horizontally mounted or suspended and free to pivot until aligned with the magnetic field of Earth. 指南针用于确定地理方向的设备，通常包括一个或多个水平安装或悬挂的磁针，可在枢轴上自由活动直到与地球磁场在一条线上
