Archimedean screw bow unit 阿基米德螺旋船首组件
Unit Bow 李宁环弓 ; 环弓减震单元
bow thrust unit 船首推进装置 ; 船首侧推装置 ; 船首推进器
bow propulsion unit 船首推进装置
bow transverse thrust unit 船首侧推器
bow of unit barge [船] 驳节首
bow-tie unit 蝶形单元
bow thruster unit 艏推力器组
By the 1840s the old detective-style units formerly run by magistrates, the most famous of which was the Bow Street Runners, had been absorbed, as had the marine unit, although the City of London retains its own police force today.
BBC: NEWS | UK | Met celebrates 175 years on the beat
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