这种趋势是由于更大输电容量，更有效利用线路走廊，更低线路损耗的规模经济性以及降低对环境影响所促使。
The trend is motivated by the economy of scale due to the higher transmission capacity, more efficient use of right-of-way, lower transmission loss, and reduced environmental impact.
笔者认为船舶大型化的趋势以及航运企业的联盟与兼并，其根本动力在于集装箱班轮运输业的规模经济性。
I think the trend of shipping maximization, alliance and annexation of shipping enterprises, deeply lies in the scale economical efficiency of the container liner transport service.
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.
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.
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