上层能带中的电子最后会发射光子释放能量。
The electrons in the upper band eventually release energy, thereby emitting photons.
本文主要研究了碳纳米管的制备、纯化、结构的模拟以及能带和场发射计算问题。
The preparation, purification, structural simulation, energy band calculation and electron-emission calculation of carbon nanotubes are studied principally in this paper.
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