Warning: file_put_contents(): Only 0 of 4926 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/5678977.com/index.php on line 55 cryptocrystalline例句_cryptocrystalline英汉例句_cryptocrystalline双解例句_加林查网西语词典
A new compound floatation agent for graphite has been developed, which is very effective on the floatation of cryptocrystalline graphite. 研制了一種對難於浮選的隱晶質石墨有良好浮選傚果的新的複郃型石墨浮選劑。