The discovery of the Quantum Hall effect in a two-dimensional electron system not only provides a new method for determination of the fine-structure constant but also may be used to develop a resistance standard, which will be outlined in the paper.
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二维电子系统量子霍尔效应的发现;不仅提供了一种测定精细结构常数的新方法;而且还可用作电阻标准.;本文简要介绍这一领域的概况
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