The drifts and deviations of National DC (artifact) Resistance Standards by comparison with Quantum Hall Resistance (QHR) since 1990 is reported.

报告了自1990年以来通过与量子化霍尔电阻比对考核的国家直流电阻(实物)基准的长期漂移率及偏差。

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With the help of other measures put forward by the authors, a Quantum Hall Resistance Standard with uncertainty of several parts in 10~(-10) has been established.

结合其他措施，完成了综合不确定度为10-10量级的量子化霍尔电阻标准装置。

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The theory of hall signal checking and how to change phase using DSP technology are discussed in detail and analyzed the method of using a single resistance measure phase current.

详细讨论了基于DSP技术的霍尔位置信号检测原理和换相控制原理，并分析了单电阻电流检测方法。

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But all French resistance crumbled when left wing Hall snapped up Bosc's pass near his own line and raced unopposed for his 34th try of the season.

BBC: England 34-12 France