The second dating method was palaeo - magnetic analysis, or magnetic polarity stratigraphy .
第二种测定法是古磁学分析法， 也叫磁极地层学测定法。
Secondly, parameters of electric machine are research foundation of operating characteristics, in order to acquire the parameters of ASCPM correctly, magnetic analysis about ASCPM is done.
其次，电机参数是仿真研究电机运行特性的基础，为了准确计算该种电机的电磁参数，对轴向分段式外永磁转子爪极电机进行了磁场分析。
ANALYSIS: The powerful magnetic field thought to surround spinning black holes may also generate a phenomenon we are more familiar with on Earth: an 'aurora'.
分析：围绕黑洞的强烈磁场可能会产生我们更为熟悉的地球上的一种现象：极光。
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