层门一般由门、导轨架、滑轮、滑块，门框、地坎等部件组成。层门应是无孔的门，净高度不得小于2m。层门关闭后门扇之间及门扇与立柱、门楣和地坎之间间隙应尽可能的小，乘客电梯应为1-6mm，载货电梯应为1-8mm。
层门指示灯 [建] landing indicator ; hall position indicator
层门安全开关 lading door safety switch ; landing sagety edge
层门门套 [建] landing door jamb
层门地坎 landing sills ; sill elevator entrance
原身双层门襟 fold back hidden placket
层门方向指示灯 [建] landing direction indicator
层门装置 Level gate installment ; Layer gate device ; Door operator ; Door device
后层门 deckdoor
后层门锁 deck lock
层门上部加强板 top door reinforcement
严禁撞击、踢打、撬动，或以其它方式企图打开电梯的轿门和层门。
Never try to open the car door or hall door through improper means such as strike, kick, and unclench.
这是一个孤立的、具有传说的建筑，有混凝土的围墙和一座两层门的塔。
It is also a single story building, but enclosed in a walled compound with a two-tiered gate tower.
我走着上楼，上第三层后，敲了他的门。
I walkedupstairs to the third floor and knocked on his door.
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