The mean geometric free path or the characteristic dimension of a container is the important physical magnitude in describing the heat motion of gas molecules under low pressure.

几何平均自由程或容器的特征尺度是低压下描述气体分子热运动的重要物理量。

youdao

So, in more common language, what does this geometric definition mean?

或者说，这个几何的定义到底是什么意思？

youdao

In fact, there are some very old books that show this as the average, the sum divided by two arithmetic mean, but the modern practice is to use the geometric mean.

事实上，一些很老的书籍上，平均的定义就是算数意义的，总的来说被分为两种算数意义，但现代我们多用几何意义。

youdao

And he defined the average in terms of not the sum divided by two, but he chose the geometric mean.

鲍林定义平均并不是,简单相加在除以二，他选择几何平均。

麻省理工公开课 - 固态化学导论课程节选

In fact, there are some very old books that show this as the average, the sum divided by two arithmetic mean, but the modern practice is to use the geometric mean.

事实上，一些很老的书籍上,平均的定义就是算数意义的，总的来说被分为两种算数意义，但现代我们多用几何意义。

麻省理工公开课 - 固态化学导论课程节选

The company hired a graphic designer who came back with the typically abstract, geometric cover designs that seem to mean high tech to art school grads.

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