| 摘要 |
A security door comprising a frame 10 in which is rotatably mounted a cylindrical door member 11 having an opening 12 to register with inlet and outlet openings the frame 10, the door member 11 being rotatable about a vertical axis, and the interior of the door member 11 defining a cylindrical space, and a floor having a weight sensitive zone 37 and a non sensitive zone 36 which form parts of a non rotatable floor. |
