“rare earth element”的概念、定义、翻译、参考文献-科学参考

　

单词	rare earth element
释义	rare earth element Encyclopedia 理学稀土元素释 rare earth element稀土元素元素周期表ⅢB族中原子序数为21、39和57～71的17种化学元素的总称。稀土元素的化学符号用RE代表。又称稀土金属。包括钪Sc、钇Y、镧La、铈Ce、镨Pr、钕Nd、钷Pm、钐Sm、铕Eu、钆Gd、铽Tb、镝Dy、钬Ho、铒Er、铥Tm、镱Yb、镥Lu。其中57～71号元素称为镧系元素，位于元素周期表最下方的f区。从镧到铕为铈组（轻稀土），从钆到镥及钇为钇组（重稀土）。 Chemistry ＞无机化学＞无机化学基本概念与无机化合物＞释义 rare earth element稀土元素
随便看	classification of myeloid and lymphoid neoplasm classification of natural disasters classification of nuclear reactors classification of oil deport classification of oils classification of organic compounds classification of organic compounds by solubility classification of organisms classification of photodetectors classification of polymer classification of protection against electric shock classification of qigong classification of question answering system classification of radiation working area Classification of Regional Drought Severity classification of rock blastability classification of sciences Classification of service operation classification of shares classification of soil texture classification of state-owned enterprises classification of structural optimization classification of the forms of government classification of the geochemical anomalies classification of thematic map elements

　

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