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n.
[化]元素釹的符號
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abbr.
北達科他(美國州名)(=North Dakota)
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abbr.
無日期(=no date)
Noun:
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a yellow trivalent metallic element of the rare earth group; occurs in monazite and bastnasite in association with cerium and lanthanum and praseodymium
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a state of north central United States bordering on Canada
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這些玩法獨家寫作,受科學專利權保護區,侵權行為必究
海詞詞典翻譯,十二年加盟品牌