天然气

• Natural gas will be the first to run out .
  天然气将首先被用完。
• Both types are known to be productive of oil and gas .
  这两类圈闭是盛产石油和天然气的。
• Gas is to be stored in the reservoir underneath the caprock .
  天然气贮存在盖层下面的油层中。
• The isotope ratio is directly used for comparing oils or gases .
  同位素比率直接用于比较各种石油或天然气。
• Salaquifers have also been used for the storage of fresh water and natural gas .
  咸水层也用来贮存淡水和天然气。
• This result is achieved by oil/oil or gas/gas correlation .
  通过石油石油或天然气天然气的对比便可得到这个结果。
• It offers an alternative to the dwindling supplies of natural gas .
  这一过程为正在减少中的天然气供应提供了另外的来源。
• Sour natural gas is a source of sulfur in countries other than the united states .
  在美国以外的国家，酸性天然气是硫黄的一个来源。
• Natural gas, which used to be available to generate electricity, was already in short supply .
  以往能够用于发电的天然气，现在早已短缺。
• The gas, which is sulphur-free, contains 89-99% methane, up to 6% ethane, and 3% propane .
  天然气不含硫，含甲烷88-99，乙烷6和丙烷3。