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.

• 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