双开关管串联 Two switches in series

双开关自动转换装置 RMQ

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

双向开关 two way switch ; double throw switch

双联开关 two-way tumbler switch ; two wire switch ; coupled twin switch ; [电] ganged switch

双极开关 bipolar switch ; [电] double-pole switch ; two pole switch ; switch

双刀开关 double-pole switch ; double switch ; pole switch ; double-point switch

双路开关 two way switch ; two-circuit switch ; two-way switch

双电源转换开关 ATS ; HCBT ; JCWATS