To evaluate the potential energy we first observe that every positive ion is in a position equivalent to that of every other position ion.

为计算势能，我们首先要注意到，每一正离子所处的位置与另一正离子所处的位置完全相当。

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To evaluate the potential energy we first observe that every positive ion is in a positon equivalent to that of every other position ion.

为计算势能，我们首先要注意到，每一正离子所处的位置与另一正离子所处的位置完全相当。

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The basic principles of the structural equivalent modeling process are discussed by using the concept of structural model potential energy and model kinetic energy.

利用结构模态势能和模态动能的概念探讨复合结构等效替代模型的建模原则。

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If less than 1% of MTV's potential viewers around the world switched to three energy-efficient light bulbs, it would be equivalent to taking 100, 000 cars off the road, Roedy adds, the well-rehearsed statistics rolling off his tongue.

FORBES: MTV's Green Crusade