water gas

名词 water gas:

1. a mixture of hydrogen and carbon monoxide with small amounts of other gases; made by blowing steam over hot coke or coal

1. A conduit of pipe, especially one used for the conveyance of water, gas, or petroleum products.
   管道，管线一条尤指用来输送水、气或石油产品的输送管道
2. The principal pipe or conduit in a system for conveying water, gas, oil, or other utility.
   主要管道输送水、天然气、石油系统中的主要管道或沟渠或其他公用事业设备