root-mean-square

基本解释

This paper introduces the pulse wide modulation(PWM) based on minimum root-mean-square value of harmonic current of inverter.
介绍了逆变器谐波电流均方根值最小的脉宽调制（PWM ）。
This modification incorporates explicitly the duration of strong earthquake ground motion into the time dependent variation of the root-mean-square peak amplitude.
这个修正明显地将强震运动的持续时间包含在均方根振幅依赖于时间的变异中。
Using the adjoint system method, analytical solutions of interceptor's root-mean-square miss distance are derived from the case where the penetration missile adopt random maneuver strategy.
用共轭系统分析法，得到了该模型在突防导弹随机机动突防策略的作用下，拦截导弹脱靶量均方根的解析解。

What we want to do now is compute the mean and variance of the portfolio-- or the mean and standard deviation, since standard deviation is the square root of the variance-- for different combinations of the portfolios.
我们现在要做的是,计算这个投资组合的均值和方差-,或者均值和标准差，因为标准差的平方就等于方差-,这对任何投资组合都是一样的。
耶鲁公开课 - 金融市场课程节选

the square root of the average of the squares of a set of numbers or quantities ( abbr: rms)