The combination of materials determines the characteristics of the battery, including its energy and power density, safety, longevity and cost.

材料之间的结合决定了电池的特性，包括它的能量和功率密度，以及安全性、使用寿命和成本。

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Several years ago, energy efficiency seemed to only be adopted by a choice few, while today it is a way of life, and should be for our Earth's longevity.

几年前，环保还被认为是少数人的选择。如今环保已经成为了一种生活方式，目的是为了我们的地球能够长寿。

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This paper has studied that the node's density under the constraints of energy, is connected with the longevity of the isomorphic self-organization sensor network.

本文研究了在能源约束条件下的节点密度，对同构的自组织传感网络寿命的定量关系。

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The heated political environment in the Middle East is still adding to uncertainty among investors in the longevity of energy prices, which have produced a 30% increase in gasoline prices for U.S. consumers from the same time last year.

FORBES: Libya Ceasefire Calms Oil's Rise, Markets Open Strong

Others have questioned the longevity of the project, saying North America already has plenty of energy resources, thus, eliminating a significant benefit of the project.

CENTERFORSECURITYPOLICY: The Bering Strait Tunnel Project