Warning: file_put_contents(/www/wwwroot/ppbbu/62383.com/cache/64d9ed2b563ed701dfb461c8b56e36fb.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/62383.com/index.php on line 55 rare-earth element er例句_rare-earth element er英汉例句_rare-earth element er双解例句_流逝汉英词典
New types 'of ceramic photochromic pigments doped with Er-oxide and other rare--earth or transition element oxides were prepared. 用铒氧化物并添加其它稀土氧化物及过渡金属氧化物合成出了新型陶瓷光致变色颜料。