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.是什么意思_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.在线翻译_英语_读音_用法_例句