推土机切断了一条煤气总管道。

A bulldozer had severed a gas main.

youdao

分析了水煤气两段炉热备阶段煤气总管中氧含量超标的原因，提出了解决措施。

The reason of excessive oxygen content in gas main pipe of two-stage water gas gasifier during hot reserve is analyzed, and improvement measures are put forward.

youdao

各种各样的伸缩接头被安装在煤气的总管道上了。

Expansion joints of various kinds are fitted on gas mains.

youdao

各种各样的伸缩接头被安装在煤气的总管道上了。

Expansion joints of various kinds are fitted on gas mains.

youdao