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供水总管

Refers to the principal pipe for distributing water.

指输送水的主管道。

煤气总管

Refers to the principal pipe for distributing gas.

指输送煤气的主管道。

爆裂的总管

A principal pipe that has broken open suddenly.

突然爆开的主管道。

破损的总管

A damaged or fractured principal pipe.

损坏或断裂的主管道。

上行总管

A pipe through which water is pumped upwards.

将水向上泵送的管道。

A principal pipe made of cast iron.

总管供应某地

The principal pipe supplies a particular area or number of buildings.

主管道为特定区域或若干建筑物提供服务。

(BrE) The public supply of electricity that comes into a building.

自来水

(BrE) The public supply of water that comes into a building.

(英式英语) 进入建筑物的公共供水。

管道煤气

(BrE) The public supply of gas that comes into a building.

(英式英语) 进入建筑物的公共煤气供应。

连接到总线

(BrE) Explicitly states that a building is linked to a public utility supply.

(英式英语) 明确说明建筑物已连接到公共事业供应系统。

在总开关处

(BrE) Used to indicate the point of control for a utility supply.

(英式英语) 用来指示公用事业供应的控制点。

接通总线

(BrE) Used to indicate that a building is connected to a public utility supply.

(英式英语) 用来指示建筑物已连接到公共事业供应系统。

修理总管

To fix a damaged principal pipe.

修理损坏的主管道。

更换总管

To exchange an old principal pipe for a new one.

用新的主管道替换旧的。

铺设总管

To install a new principal pipe, usually underground.

安装新的主管道，通常在地下。