“polarity transition period”的概念、定义、翻译、参考文献-科学参考

单词	polarity transition period
释义	polarity transition period Geology and Earth Sciences The time taken for a change of polarity of the geomagnetic field. It is thought to take 3000–5000 years for directional changes and about 12 000 years for associated intensity changes.
随便看	mass number mass production mass ratio mass spectrometer mass spectrometry mass spectroscopy mass storage mass strength mass-to-light ratio mass transfer mass transfer coefficient mass-wasting mass–energy equation mass–luminosity relation mass–radius relation mast cell master master argument master curve master file master frequency meter mastering master oscillator master record master/slave morality

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