Through the study, the noise of QN700 air fuel fired heaters is solved radically, and the route is offered to settle the noise control of this type of equipment.是什么意思_Through the study, the noise of QN700 air fuel fired heaters is solved radically, and the route is offered to settle the noise control of this type of equipment.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句