(1)(水，氣等入樓)總管，(入樓的供電)主線(principal pipe in a distributing system for water，gas，etc or principal cable carrying electricity(into a building))[C]：a gas/a heating/an electric～煤氣總管/暖氣總管/電源線;The severe cold caused a water～to burst.嚴(yán)寒把輸水總管凍裂了。
(2)污水總管(chief sewer pipe taking wastewater，etc out from a building)[C]：a sewer～下水管道;The～of the building needs repairing.樓房的下水總管需要修理。
(3)供(排)水(氣)管道(網(wǎng))，輸電線路(網(wǎng))(pipes or wires used to carry water，gas or electricity supply(to the system of a building or an area))[pl][接sing or pl動(dòng)詞]：a new house with no～s electricity supply未接輸電線路的新房子;The building isn't on the～s.這幢樓房沒有接通供水管和輸電線網(wǎng)。Gas/Water/Electricity is turned off at the～s.煤氣/供水/供電已被切斷源頭?！玸 gas/water/electricity/voltage供氣處/供水處/供電處/電源電壓;a～s radio/shaver外接電源收音機(jī)/剃刀