This type of authentication can be seen as a digital analog to having a physical token.
这种类型的认证可以视为对物理标记的数字模拟。
You usually need to perform some type of signal conditioning on analog signals that represent physical phenomena.
通常需要对某些表示物理现象的模拟信号进行信号调节。
The results of numerical calculation coincide with the results of physical analog experiments.
数值计算的结果与物理模拟实验的结果是相符的。
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