Warning: file_put_contents(/www/wwwroot/ppbbu/3402.cn/cache/f8cf069a7b5159ef97048d7338a17b7a.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/3402.cn/index.php on line 58 situatlon例句_situatlon英汉例句_situatlon双解例句_咖味滋双解词典
Polysilicon is refined by means of physicochemical methods and then produced By chlorination of industrial silica powder in a partlcular situatlon . 多晶矽是由工業矽粉氯化，採用物理、化學方法提鍊和特定條件下還原生産的。