Air grille louvre, carbon filter, exit sign box, VAV box, Fluorescent luminaires lamp, air condition, flexible duct, fibreglass insulation, air duct test cleaning point.是什么意思_Air grille louvre, carbon filter, exit sign box, VAV box, Fluorescent luminaires lamp, air condition, flexible duct, fibreglass insulation, air duct test cleaning point.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句