单刀双掷 SPDT ; Single Pole Double Throw ; Form

双刀双掷 DPDT ; double pole double throw ; Dual Pole Dual Throw

单刀双掷开关 SPDT ; [电] Single-pole Double Throw Switch ; monopole double throw switch ; throw switch

双刀双掷继电器 PELAY-DPDT ; DPDT

双极双掷 DPDT

双掷开关 double-throw switch

单刀双掷开关继电器 RELAY-SPDT

双掷隔离开关 double-throw disconnecting switch