Bastnaesite is the predominant commercial rare earth mineral, which is characterized by coarse to megacrystals and by strong Ce-selection pattern.是什么意思_Bastnaesite is the predominant commercial rare earth mineral, which is characterized by coarse to megacrystals and by strong Ce-selection pattern.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句