- tra istor relay
- transistor relay
- 晶体管: transistor; crystal valve
- 继电器: electric relay; relay
- 晶体管时间继电器: tra istor time relay; transistor time relay
- 电子管继电器: electronic tube relay; vacuum tube relay; vacuum-tube relay; valve relay
- 光电管继电器: photocell relay; phototube relav; phototube relay
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