probability density function

基本解释

This cartoon shows the probability density function of 1s.
下面这个动画表示了,数1s轨道的概率密度函数。
Well, it depends on what you know about the measurements' probability density function (PDF).
它依赖于您对度量值的概率密度函数（probability density function，PDF）的认识。
Figure 1 shows a typical normal probability density function, so called because most observations fall into this sort of distribution.
图1显示了一个典型的正态概率分布函数，这样命名是因为绝大多数值都属于这个分布范围内。

This cartoon shows the probability density function of 1s.
下面这个动画表示了,数1s轨道的概率密度函数。
麻省理工公开课 - 固态化学导论课程节选
We can graph out what this is where we're graphing the radial probability density as a function of the radius.
我们可以，画出它来,这是径向概率密度,作为半径的一个函数图。
麻省理工公开课 - 化学原理课程节选
We can talk about the wave function squared, the probability density, or we can talk about the radial probability distribution.
我们可以讨论它,波函数的平方，概率密度，或者可以考虑它的径向概率分布。
麻省理工公开课 - 化学原理课程节选

a function representing the relative distribution of frequency of a continuous random variable from which parameters such as its mean and variance can be derived and having the property that its integral from a to b is the probability that the variable lies in this interval. Its graph is the limiting case of a histogram as the amount of data increases and the class intervals decrease in size (Also called density function) &rarrcompare cumulative distribution function ,frequency distribution