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单词 Root mean square
释义

Root mean square

原声例句
Crash Course Physics 速成课物理

Hence the name: root mean square.

均方根。

Crash Course Physics 速成课物理

And the root mean square speed is slightly to the right of that.

和均方根速度 这个右边有点。

Crash Course Physics 速成课物理

Today, you learned about the kinetic theory of gases, and how to calculate the root mean square speed.

今天,我们了解了气体的动力学理论, 以及我们如何计算均方根速度。

Crash Course Physics 速成课物理

The square root of the average squared velocity is what we call the root mean square speed.

速率平方的平方根 就是我们所说的均方根速度。

Crash Course Physics 速成课物理

So, how does the root mean square speed compare to the actual speeds of the molecules in the gas?

那么,rms 速度如何比较 气体中分子的正常速度?

中文百科

平方平均数

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

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 21:35:18