而油气田在对天然气储量经济性评价中，由于受资料的限制，往往难以进行准确的评价。
But in the economic evaluation to the gas reserves, we are always difficult to carry on the accurate valuation because of lacking the related material.
天然气输配管网具有自然垄断的基因，有着规模经济性以及范围经济性。但若任其滥用垄断地位允许其自由缔结合同则有限制竞争和损害消费者权利之虞。
With the essence of natural monopoly and freedom of contract, if such a dominant undertaking abuses its market power, there is a risk of eliminate the competition and harming the consumer interest.
而空气没有温度限制，并且对环境友好，但其热容量较小，导致经济性不好；
On the contrary, air has no limitations on the working temperature and is quite friendly to the environment. But it has small thermal capacity, which leads to a reduction in the economic capability.
应用推荐