“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	medical geographic information system medical geographic map medical geography medical heath materials and dressing medical helminth medical HER(high energy ray) device medical HER treatment devices medical high frequency devices and instruments Medical Human Resource Management medical image medical image analysis medical image data medical image fusion medical imaging medical imaging technology medical immunology medical implants medical implants identification medical incubator Medical information Medical information management medical information service Medical Institution for the People medical instrument branch of china instrument and control society Medical instrument management

　

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