Warning: file_put_contents(/www/wwwroot/ppbbbu/5356789.com/cache/22e9195e61c48cb5d6001752e085dbaf.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/5356789.com/index.php on line 55 alkali-earth是什么意思，alkali-earth的翻译，alkali-earth音标、读音、用法和例句_零六五六深蓝词典
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。