solar magnetic activity cycle 或称为太阳磁活动周期
abnormal low frequent magnetic activity 异常低频磁场活动
abnormal low frequency magnetic activity 异常低频磁场活动
In the present thesis, we first of all introduce the basic methods of analyzing the magnetic activity of close binaries.
本文首先对密近双星磁活动的基本分析方法进行了简要的介绍。
参考来源 - 密近双星磁流体活动的实测与理论分析·2,447,543篇论文数据，部分数据来源于NoteExpress
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。
In many ways a lack of magnetic activity is a boon forscience.
从很多方面来看，磁场活性降低对科学有利。
Astronomers have indirectly detected magnetic activity associated with other stars.
天文学家们曾经间接地发现跟其他恒星相关的磁活动。
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