- toemergency exit
- 顶部: top; upper apex; top half; h ...
- 安全门: emergency exit
- 对重装置顶部安全高度: clearance tocounterweight; tocounterweight clearance
- 对重装置顶部安全装置: counterweight toclearance
- 安全门: an emergency door; an emergency exit; bailout door; detention/security doors; exit door; exit opening; fire escape; relief door; safety door; safety gate; security gate
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