Topic
revolving door.
door, typically consists of three or four doors that hang on a central shaft and rotate around a vertical axis within a cylindrical enclosure
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About revolving door
A revolving door typically consists of three or four doors that hang on a central shaft and rotate around a vertical axis within a cylindrical enclosure. To use a revolving door, a person enters the enclosure between two of the doors and then moves continuously to the desired exit while keeping pace with the doors.
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