活板门 meaning in Chinese

trap door
trapdoor

The woman shut the trapdoor with a slam .
这位女主妇砰的一声关上活板门。
In one corner a ladder went up to an open trap door .
角落里有一道梯子，通往上面敞开的活板门。
Spring type holders for trap - doors
活板门用弹簧式定位器
Theatre technology , stage equipment - trap doors - general characteristics
剧院技术舞台装置.活板门.一般特征
Door - fallhook for trap - doors
活板门用自落式门钩

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