三通

- {機} triplet; tee; tee joint; {工} wye; Y; yoke

- （指通郵、通商、通航） “three exchanges”: exchanges of mails, trade, air and shipping services; the opening of postal, aviation and navigational services and commercial interflow

三通分線管Y-junction

三通管three-way pipe; single sweep tee; T-branch (pipe); three-limb tube

三通換向旋塞three-way reversing cock

三通接頭three-way connection; T-connection; duplex fitting; tee fitting

三通接線夾three-way connector

三通天線轉發開關triplexer

三通筒triple cylinder

三通旋塞three-way cock