“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	Singing Festival Singing festival of Gin nationality Singing must be suitable for the lyric singing of Qupai couplets singing path singing performance with an octagonal drum singing skills of Quyi singing style with ornaments singing to the four-stringed plucked instrument sing in unison single single 1/4 wave-plate method single-address computer single addressing space single-address system single administration pharmacokinetic analysis single anchor leg mooring system single antenna Single Aperture Far-Infrared Observatory single-aperture radio telescope single-arc method single-arm spectrometer single asset test single-atom catalysis single-atom catalyst

　

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