双刀双掷 meaning in Chinese

double pole double throw
dpdt double-pole double-throw

Double - pole - double - throw switch
双刀双掷开关
Dpdt double - pole double - throw
双刀双掷开关
Switches , push button , illuminated , momentary , spdt and dpdt , one lamp . detail specification for
单刀双掷和双刀双掷瞬动单灯照明按钮开关.详细规范
Switch , push button , illuminated , 2pdt , 4pdtand indicator assemblies , 4 - lamp , solid mounting , detail specification for
4灯整体安装双刀双掷和4刀双掷照明按钮开关及指示器组件详细规范