| 摘要 |
<p>The dividing wall has a hole through which a conveyor track allows transfer of objects from one side of the wall to the other. to maintain the temp. differential between the two sides of the wall, hinged doors are provided. When the conveyor track is extended into the storage room, the outer door which is hinged along the top edge, is closeD. After loading the track and retracting it, the outer door is held open by a cam rail. In this position, the inside door which is hinged along the bottom edge, is pulled against the wall, thus sealing off the room.</p> |
