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单词 ring main
释义

ring main

美 
英 
  • n.(电路的)环形干线;(管路的)环形主线
  • 网络总环;环干线;环型总水管
ring main
n.
1.
(电路的)环形干线an arrangement of cables that allows electricity to be supplied to a series of places from either of two directions
2.
(管路的)环形主线an arrangement of connected pipes that allows water, steam, etc. to enter and leave a system
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