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门是房间内外的进口,但在发生火灾时居住和工作在二楼以上的人往往不能从门口安全撤离。如果人能翻窗越墙而下却可火里逃生。缓降器就是可以使人沿墙下滑的救生装置。 “缓降器”由以下部件组成:
The door is the entrance to the room and beyond, but people who live and work on the second floor or above in the event of a fire often can not safely exit from the door. If people can go through the wall under the window but can escape fire. Descending device is a life-saving device that allows people to slide down the wall. The “descender” consists of the following components: