In field trial,operation for 60 min in a 70 m~3 room eliminated 91.79% of natural bacteria in air of the room.是什么意思_In field trial,operation for 60 min in a 70 m~3 room eliminated 91.79% of natural bacteria in air of the room.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句