mechanical push-bar emergency exit lock
推闩式机械逃生门锁 mechanical push-bar emergency exit lock 推闩式联动报警逃生门锁 linkage-controlled push-bar emergency exit lock with alarm ..
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mechanical push-bar emergency exit lock
机械推杆紧急出口锁
以上为机器翻译结果，长、整句建议使用 人工翻译 。