“magnetic secular change”的概念、定义、翻译、参考文献-科学参考

单词	magnetic secular change
释义	magnetic secular change [mag`ned·ik ¦sek·yǝ·lǝr `chānj] ^GEOPHYSICS The gradual variation in the value of a magnetic element which occurs over a period of years.
随便看	check routine check row check sample check screen check standard check stop check study check sum check symbol check valve check word Chediak-Higashi anomaly cheek cheek pouch cheese cheese antenna cheesebox still cheese cement cheesecloth cheese head cheetah cheiloplasty cheilosis Cheilostomata cheimaphobia

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