In the recovery of used acid from coking refined benzene by means of salting-out-extraction process, small amount of acid tar slag is produced.是什么意思_In the recovery of used acid from coking refined benzene by means of salting-out-extraction process, small amount of acid tar slag is produced.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句