纵观全球,人们会发现这样一种关联:天然气的普及基本与一个国家和地区的经济发展水平成正比。比如欧美等国的天然气占一次能源比重明显高于其 Throughout the world, people will find such a link: the popularity of natural gas and a country is basically proportional to the level of economic development. Such as Europe and the United States and other countries accounted for a significant proportion of natural gas energy than it