Natural gas often also contains gases such as nitrogen, oxygen, and carbon dioxide; sulfur compounds; and water.

 
  • 天然氣中通常也含有氮氣、氧氣、二氧化碳、硫化物等氣體和水。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan