In order to satisfy the revamping of refinery and chemical equipments,a new kind of tray,louver jet tray(LJT),was presented.是什么意思_In order to satisfy the revamping of refinery and chemical equipments,a new kind of tray,louver jet tray(LJT),was presented.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句