So, if we want to go from that stable state to that less stable state, we need to put in a certain amount of energy to our system, that difference between the free electron and the electron bound to the metal.

所以，如果我们想使电子,从稳态到达不够稳定的状态，我们需要引入一定数量的,能量到系统中，即自由电子和束缚于金属的,电子的能量差。

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Others pointed out that they will make little difference to the amount of junk mail people receive.

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The experiment showed more of a difference in the amount of money they gave to the low- versus the high-performance groups.

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This variant of the two-MRC construct made a particular difference in the amount of airlift and sealift and the investments required in critical warfighting enablers.

CENTERFORSECURITYPOLICY: Center for Security Policy | The Measure of a Superpower: A Two Major Regional Contingency Military for the 21st Century | Page: 2