The selection of very low-pressure-loss air handling and duct system components means the ventilation energy use target is 1W per litre of air supplied.是什么意思_The selection of very low-pressure-loss air handling and duct system components means the ventilation energy use target is 1W per litre of air supplied.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句