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blocking lever
auto. 锁紧杆; 停止杆
commun., railw. 闭塞手柄
tech. 联锁杆; 闭塞杆; 止动杆; 停秒杠杆
blocking-lever
gen. 联锁杠杆; 止动; 〔锁紧,闭塞〕杆

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