hinged flap hatch cover
铰翻型舱口盖
Hinged flap for working floors and walkways
过道地板和通道用带铰链的盖板
She lifted the hinged flap of the counter and gestured that he should come through.
她拉起柜台用铰链连结的折翼，做了个手势要他穿过去。
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