与铁屑和磁棒对称整齐的磁场模式不同，地球磁层面向太阳的一面被向内推，在相反的方向上延伸出磁场的轨迹。
Unlike the symmetrical pattern of the iron filings and magnet, the magnetosphere is pushed in on the side facing the Sun and stretched out in the Earth's wake.
随着磁场减弱，太阳黑子的数量会减少到最小值或者说最低点(波谷)，然后太阳的磁场就会反方向运动，开始重新变强。
As the field wanes, the number of sunspots falls to a trough or minimum, at which point the sun's magnetic field reverses direction and starts to regain its strength.
看不见太阳时，它们会依据地球的磁场采用某种特殊的方法来感知方向。
When they cannot see the sun, they use some special way to sense direction from the earth's magnetic field.
本文绘出旋涡黑子的缠绕方向于1970—1978年内在日面南、北半球的分布，它反映出太阳大气的较差自转对黑子磁场的扭绞形态发生了作用。
In this paper we present the distribution of the penumbral patterns of the spiral spots on the north and south hemispheres of the solar disk in the period between March 1970 and December 1978.
文本给出旋涡黑子的缠绕方向于1970—1978年内在日面南、北半球的分布，它反映出太阳大气的较差自转对黑子磁场的扭绞形态发生了作用。
In the paper we present the distribution of the penumbral pattern of the spiral spot on the north and south hemispheres of the solar disk in the period between March 1970 and December 1978.
文本给出旋涡黑子的缠绕方向于1970—1978年内在日面南、北半球的分布，它反映出太阳大气的较差自转对黑子磁场的扭绞形态发生了作用。
In the paper we present the distribution of the penumbral pattern of the spiral spot on the north and south hemispheres of the solar disk in the period between March 1970 and December 1978.
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