如果这一误差相对于源信号或测量值非常大,则可测量接触电势,并对其进行补偿,以保证系统准确度。
If the error is significant with respect to the source or measure value, the contact potential can be measured and compensated for to preserve system accuracy.
当被增加到信号上时,则很容易计算出该接触电势对测量准确度的影响。
When added to the signal, it's easy to calculate the impact of this contact potential on the measurement accuracy.
如果屏蔽和测量仪器之间存在一个交流电势差,则可能有电容性电流通过测量电路,增大干扰。
If there is an ac potential difference between the shield and the measuring instrument, there may be capacitive currents flowing through the measuring circuit that will add interference.
It turns out the electrical potential or electricity that you can measure on the surface of the body reflects things that are happening deeper inside like the beating of your heart.
人们已经证明在体表测量得到的电势能,或者电信号,能够表征,像心跳这样,身体较深处的变化
Rather than by forming an image or a picture you put electrodes on the surface of the body and measure the electrical potential as a function of position on the body.
它并不对人进行直接的造影,而是将电极放到身体表面,通过测量该位置电势能,表征该部位的生理状态
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