EC 网站上所述：

Average:
mean (value)
(arithmetical) mean
(arithmetical) average
1) for n quantities x1, x2, … xn, quotient of the sum of the quantities by n:

2) for a quantity depending on a variable, integral of the quantity taken between two given values of the variable, divided by the difference of the two values:

NOTE 1 – For a periodic quantity, the integration interval comprises an integral number of periods.
NOTE 2 – The mean value of the quantity X may be denoted by  , by  or by Xa.


average detector    


a detector the output voltage of which is the average value of the envelope of an applied signal
NOTE – The average value must be taken over a specified time interval.

quasi-peak voltmeter     一个结合准峰值检波器耦合到一个指示仪表机械有一个指定的时间常数

the combination of a quasi-peak detector coupled to an indicating instrument having a specified mechanical time constant

quasi-peak detector    


a detector having specified electrical time constants which, when regularly repeated identical pulses are applied to it, delivers an output voltage which is a fraction of the peak value of the pulses, the fraction increasing towards unity as the pulse repetition rate is increased



peak value    


maximum value of a quantity during a specified time interval
NOTE – For a periodic quantity, the time interval has a duration equal to the period.
一组统计数据的值

RMS值实际就是有效值,就是一组统计数据的平方的平均值的平方根。

RMS＝（X1平方＋X2平方＋......＋Xn平方）/n 的－1/2次方。