three-way switch

名词 n.

英文释义

名词 n.
  1. A type of light switch that can be arranged in pairs to control lights from two locations, as at either end of a stairway or long hallway; a double-throw switch. (UK): two-way switch. US

词形变化

词源

Named after its three electrical connections, as opposed to the two connections of a normal light switch.
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