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单词 RMS value
释义

RMS value

原声例句
Crash Course Physics 速成课物理

And that variable is the root-mean-squared, or RMS value, of current.

该变量 是电流的均方根或 RMS 值。

Crash Course Physics 速成课物理

Now, this same derivation works for alternating voltage, as well, with the RMS value of voltage being equal to the peak voltage divided by the square root of 2.

现在，同样的推导也适用于交流电压，电压的 RMS 值等于峰值电压除以 2 的平方根。

Crash Course Physics 速成课物理

With these two RMS values at your disposal, you can then use them in place of current and voltage in DC equations, with power equaling the RMS current times RMS voltage.

有了这两个 RMS 值，您可以使用它们代替 直流方程中的电流和电压，功率等于 RMS 电流乘以 RMS 电压。

中文百科

平方平均数 Root mean square

（重定向自RMS value）

平方平均数（Quadratic mean），简称方均根（Root Mean Square，缩写为 RMS），是2次方的广义平均数的表达式，也可叫做2次幂平均数。其计算公式是：

M = \sqrt{\sum_{i=1}^n x_i^2 \over n} = \sqrt{x_1^2 + x_2^2 + \cdots + x_n^2 \over n}

在连续函数\begin{smallmatrix}f(x)\end{smallmatrix}的区间\begin{smallmatrix}[a,b]\end{smallmatrix}内，其均方根定义为：

f_{\mathrm{rms}} = \sqrt {{1 \over {b-a}} {\int_{a}^{b} {[f(x)]}^2\, dx}}

英语百科

Root mean square 平方平均数

（重定向自RMS value）
Sine, square, triangle, and sawtooth waveforms
Graph of a sine wave's voltage vs. time (in degrees), showing RMS, peak(PK), and peak-to-peak(PP) voltages

In statistics, the root mean square (abbreviated RMS or rms), also known as the quadratic mean, is defined as the square root of the arithmetic mean of the squares of a set of numbers. RMS can also be defined for a continuously varying function in terms of an integral of the squares of the instantaneous values during a cycle.
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更新时间：2025/6/19 9:16:26