It has been suggested that birds can sense the magnetic lines of force stretching from the north to south magnetic poles of the earth, and so direct themselves.
有人认为，鸟类能觉察得出地球自北向南磁极的磁力线，因而能为自己导向。
Well, with a lot of money, you can cut even the atom into to subatomic particles: protons, neutrons and electrons, but even these little magnets still always have one North and South magnetic pole.
好吧，如果你有很多钱，你甚至可以把原子分成一些亚原子粒子：质子、中子和电子，但即使是这些小磁体，也还是有南北磁极。
The researchers measured the magnetic strength of certain rocks found in the Kaapvaal craton of South Africa, a geologic region known to date back more than 3 billion years.
研究者测量了一些在南非卡普瓦尔（Kaapvaal）克拉通（craton，稳定地块）被发现的岩石的磁场强度，卡普瓦尔克拉通是公认为可以追溯到30多亿年前的一块地质区域。
The magnetic termite Amitermes meridionalis of Australia uses Earth's magnetic field to build mounds elongated in anorth-south direction.
生活在澳大利亚的磁石白蚁（Amitermesmeridionalis）利用地球磁场建造南北走向的白蚁丘。
Scientists already knew that the creatures used changes in Earth’s magnetic field to help them tell north from south and steer themselves along the right latitude.
海龟利用地球磁场的变化分辨南北方位，从而指引自己沿正确的纬度迁徙，这对科学家来说并不陌生。
Scientists already knew that the creatures used changes in Earth's magnetic field to help them tell north from south and steer themselves along the right latitude.
海龟利用地球磁场的变化分辨南北方位，从而指引自己沿正确的纬度迁徙，这对科学家来说并不陌生。
These changes are mild compared to what Earth's magnetic field has done in the past - sometimes the field completely flips, with the north and the south poles swapping places.
这种变化与地球磁场曾经发生过的变化相比还算温和的——有时地球磁场会完全翻转，地磁北极和地磁南极会对调。
These changes are mild compared to what Earth's magnetic field has done in the past —sometimes the field completely flips, with the north and the south poles swapping places.
这种变化与地球磁场曾经发生过的变化相比还算温和的——有时地球磁场会完全翻转，地磁北极和地磁南极会对调。
They act, in other words, like tiny bar magnets with north and south poles, making them rotate in a magnetic field.
打个比方，这个“磁极矩”可以让电子像一个微型的条形磁铁那样在磁场中旋转。
The scientists were also shocked by data showing that Uranus' magnetic north and south poles were not closely aligned with the north-south axis of the planet's rotation.
领科学家震惊的是数据显示天王星的磁场南北极与行星的旋转南北轴线极不一致。
The aurora borealis, caused by solar wind particles accelerating along Earth’s magnetic field, would have been visible as far south as present-day New York City.
由沿着地球磁场加速运行的太阳风粒子所引起的北极光（auroraborealis），将能够在纬度与现今的纽约市相当的位置观察到。
The sun's magnetic field near Earth has tipped south, opening a crack in Earth's magnetic defenses against the solar wind.
太阳在地球附近的电磁场已经偏向南方，在地球抵御太阳风的磁场防卫层上打开了一道口子。
You can take something that's magnetic with a north-south 1 magnetization and just say arbitrarily, this will represent one.
你只需要一个北南极的磁性物体,任意指定，比方说代表。
Earth is a very large magnetic field, the magnetic field lines from the North Pole, the Earth's surface into the South Pole.
地球是一个无比巨大的磁场，其磁力线由北极出来，经地球表面而进入南极。
This means that the magnetic North Pole changes place with the magnetic South Pole.
这意味着磁北极的变化与南极磁场发生。
The shallow geothermal field in the south of Zhengzhou has been studied using integrated geophysical method of gravitative, magnetic and electrical survey.
利用重、磁、电综合物探勘测研究了郑州南浅层地热田。该地热田有明显的重磁电异常；
In South China which lies in low latitudes, there are large quantities of granites and volcanic rocks, whose magnetic fields are different from those in other areas.
处于低纬度的华南发育了大量的花岗岩和火山岩，其磁场特征不同于其他地区。
The periodic switching of the magnetic north and south poles of the Earth throughout time, probably as a result of movement of fluid within the Earth's core.
地球的地磁北极和南极随时间作周期性的变换，或许是地核内部流体运动的结果。
And Why can't we find an isolated magnetic north or South Pole?
为什么我们找不到单独存在的南磁极或北磁极的磁极呢？
The resulting images show a giant magnetic loop extending from the north and south poles of the smaller star all the way to its larger partner, located about 9 million kilometers away.
最终的图像显示，一个巨大的磁环从较小恒星的南北两极一直延伸到那颗较大的恒星处，这颗较大的恒星位于大约900万公里之外。
The results show that within the Philippine Sea and the South China Sea, short - wavelength lineations of the geoid undulation are parallel or cross to magnetic lineations and rifting ridges.
结果表明，菲律宾海和南海显示了与磁条带、扩张脊对应或斜交的高频成分大地水准面起伏条带。
Magnetic saturation effect on the saliency is used to distinguish the north magnetic pole from the south.
磁饱和影响的显着性是用来区分从南部的北磁极。
The magnetic lineations mainly dip to the north hemisphere and part of them developed near south-north direction.
磁性线理主要倾向北半球，而且部分磁性线理近南北方向分布。
Such nuclei spin on an axis like miniature tops, giving rise to a magnetic moment, which means the nuclei act as if they were bar magnets with a north and south pole.
这种原子核像缩微的陀螺围绕一根轴线自旋，产生磁性，像具有S极和N极的磁铁棒一样。
Every 22 years, the sun's magnetic field switches north and south, creating an 11-year sunspot cycle.
太阳上的南北极每二十二年对调一次，由此产生长达十一年的太阳黑子周期。
Every 22 years, the sun's magnetic field switches north and south, creating an 11-year sunspot cycle.
太阳上的南北极每二十二年对调一次，由此产生长达十一年的太阳黑子周期。
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