1)turn-out bell,出动铃2)house gong,出动警铃3)ring-out,呼出振铃4)ring-out point,呼出震铃点5)shaking bell start,振铃起动6)electrically operated bell,电动铃
用法例句
A Practical technique which combines shaking bell start circuit with minitype program control exchanger to form an automatic atmosphere inspecting subordinate station is introduced,with the purpose of solving such problems as computer recovery when disturbed and lightening strike.
