dead-man's handle

基本解释

• 安全手柄

词组短语

短語

• dead -man's handle 安全手柄

• dead-man's handle更多词组

英英字典

柯林斯英英字典

• a safety switch on a piece of machinery, such as a train, that allows operation only while depressed by the operator

• dead-man's handle剑桥字典
• dead-man's handle柯林斯字典

专业释义

琯理學

• 自廻位手柄