In this paper, we want to introduce the measurement principle of automotive chassis dynamometers and a testing method. And we can educe the uncertainty of the standard value by analyzing.
本文简要介绍了汽车底盘测功机的测量原理，以及对其进行检测的方法，并通过分析得出由检定装置给出的标准值的不确定度。
We can describe quantities of electric magnetic field in different inertia system, and use Lorentz transformations to educe the transformations between them.
描述电磁现象的场量在不同的惯性系中有不同的量值，利用洛伦兹变换关系式导出它们之间的变换形式。
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