3PDT(3 Pole Double Throw)是三刀双掷的意思， 同理SPDT(Single Pole Double Throw)是单刀双掷的意思, DPDT(Double Pole Double Throw)是双刀双掷。 4PDT(4 Pole Double Throw)是四刀双掷的意思。
详情>>
3pdt
3PDT(3PoleDoubleThrow)是三刀双掷的意思，同理SPDT(SinglePoleDoubleThrow)是单刀双掷的意思,DPDT(DoublePoleDoubleThrow)是双刀双掷。4PDT(4PoleDoubleThrow)是四刀双掷的意思。 详情>>
3pdt pdt
