Sodium polysulfide/ bromine ( PSB) energy storage battery had advantages of high efficiency, long lifetime, low cost and rapid response. It was suitable for utility scale application.
多硫化钠/溴(PSB)贮能电池具有成本低、寿命长、效率高、响应快等优点,适合建造大规模贮能电站。
Flood insurance possesses the characteristics of public goods, such as undividable utility and big scale of operation; whereas in other aspects it is of the features of private goods including competition of consumption and exclusiveness in benefits.
洪灾保险在某些方面具有公共物品的特征,如效用上不可分割性、经营上的规模性。但洪灾保险在某些方面又具有私人物品的特性,如消费上的竞争性和收益上的排他性。
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