Warning: file_put_contents(/www/wwwroot/ppbbbu/oiqp.com/cache/0cea01f4ee08296f0a8b110f77c19bea.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/oiqp.com/index.php on line 55 alkali-earth例句_alkali-earth英汉例句_alkali-earth双解例句_奇葩剧汉英词典
Rare earth luminescence materials of alkaline earth stannates have also been prepared via thermal decomposition of hydroxo stannate precursors. 利用某些新型带羟基的碱土锡酸盐作为前驱体,固相反应合成掺稀土的锡酸盐发光材料。