名詞 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，管線一條尤指用來輸送水、氣或石油產品的輸送管道
2. The principal pipe or conduit in a system for conveying water, gas, oil, or other utility.
   主要管道輸送水、天然氣、石油系統(tǒng)中的主要管道或溝渠或其他公用事業(yè)設備