Geomagnetic activity, the natural variations in Earth's magnetic field, it fluctuates in 11-year cycles.
地磁活动是地球磁场的自然变化，其波动周期为11年。
Oh yes, and there's geomagnetic reversal.
噢对了。还有地磁反转呢。
The geomagnetic field varies continuously.
地磁场不断地发生变化。
The geomagnetic field varies continuously .
地磁场不断地发生变化。
The problem of blind area of geomagnetic turns sensor exists theoretically.
地磁式转数传感器的盲区问题在理论上是客观存在的。
The method of spherical harmonic analysis is using widely in geomagnetic and gravitation.
球谐分析在地磁学与地球重力学中得到广泛的应用。
Geomagnetic torque for yaw stabilization is provided by permanent magnet on the satellite.
卫星上的永久磁铁获取所需的地磁力矩，稳定偏航姿态。
Despite their visual appeal, these brilliant light shows are actually storms - geomagnetic storms.
尽管视觉效果很引人注目，这些灿烂的光芒实际上是风暴地磁风暴。
Are geomagnetic disturbances a risk factor for the sudden unexplained death of epileptic children?
地磁干扰对患癫痫小孩突然无故死亡不是一个危险因素吗？
Despite their visual appeal, these brilliant light shows are actually storms - geomagnetic storms.
尽管他们呈现出如此的视觉效果，然而这些色彩斑斓的光线实际上是风暴地磁暴。
The geomagnetic methods play an important role in many aspects of earthquake prediction researches.
地磁手段在地震预测研究中的许多方面发挥了重要作用。
Actually, it discusses the methods for using geomagnetic revolution sensor to realize fuze ranging.
阐述了磁感应转数传感器实现引信定距的实际应用方法。
In a infinite and empty space the geomagnetic field falls off in strength with the third power of distance.
在无限和真空的空间中，地磁场在强度上随距离3次方而衰减。
The plan, methods and principle of azimuth survey was introduced for Urumqi geomagnetic station marker.
介绍了乌鲁木齐地磁台测量标志方位角的方案、测量方法、原理。
Y is tangential to the ground at the device's current location and points toward the geomagnetic North Pole.
值是设备当前所处位置与地磁北极的正切值。
The measure method, scheme and result of astronomical azimuth of Zhaoqing Geomagnetic Station are introduced.
介绍了肇庆地磁台天文方位角的测量方法、方案及测量结果。
The data of IGRF (International geomagnetic Reference Field) are widely used in the geomagnetic basic investigations.
(国际地磁参考场)资料在地磁学的基础研究中得到广泛的应用。
The scheme USES geomagnetic declination and geomagnetic inclination as matching parameters to acquire rough position.
该方法以磁偏角和磁倾角作为匹配参数进行图匹配，获取粗位置信息。
Low carbon steel samples were tested under static tension conditions in quest of physical mechanism in geomagnetic field.
为探索磁记忆现象的物理机制，在地磁场环境中，静载拉伸低碳钢板状试件。
It is closely relationship between the short period geomagnetic anomalies and disturbance before and after the earthquake.
特别是短周期的地磁异常变化与地震发生前后的地磁扰动密切相关。
The results show that the subway of the city has significant influence for the observation environments of geomagnetic field.
结果显示，城市地铁交通对其周围的地磁观测环境具有较大的影响。
It was found that the occurrence rate, current intensity and density increase with an increasing level of geomagnetic activity.
统计结果表明，场向电流的发生率、强度和密度都随地磁活动的增加而增大。
One important finding was that most of the geomagnetic field originates at only four broad regions on the core-mantle boundary.
重要的发现之一，是地球的大部份磁场仅来自地核–函交界面上的四个广大区域。
The scientist revealed that the geomagnetic field surrounding the planet was one of the primary influences of the entire biosphere.
科学家揭露，围绕地球的地磁场是整个生物圈的主要影响之一。
Geomagnetic storms usually last 24 to 48 hours — but some could last for many days, read a statement from the us National Weather Service.
美国国家天气气象局的报道陈述说，地球磁暴通常持续24至48小时——但是个别能持续几天时间。
And while aurorae are normally visible only at high latitudes, they can light up the sky even at lower latitudes during a geomagnetic storm.
虽然极光通常只出现在高纬度地区，但是在磁暴发生时，极光也能点亮稍低纬度地区的天空。
This striking aurora image was taken during a geomagnetic storm that was most likely caused by a coronal mass ejection from the Sun on May 24, 2010.
这张惊人的极光图片在一场极有可能由2010年5月24日来自太阳的日冕物质抛射引起的地磁风暴期间拍摄的。
This striking aurora image was taken during a geomagnetic storm that was most likely caused by a coronal mass ejection from the Sun on May 24, 2010.
这张惊人的极光图片在一场极有可能由2010年5月24日来自太阳的日冕物质抛射引起的地磁风暴期间拍摄的。
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