The technological process for the preparation of active zinc oxide from zinc oxide fume dusts or crude zinc oxide by ammonia complicating and oxidizing method was studied.是什么意思_The technological process for the preparation of active zinc oxide from zinc oxide fume dusts or crude zinc oxide by ammonia complicating and oxidizing method was studied.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句