first moment of area中文什么意思

静矩

面积一次矩

• first:    adj. 1.最初的，最早的。 2. ...
• moment:    n. 1.一转眼功夫,片刻,瞬息,刹 ...
• area:    n. 1.面积；平地；地面。 2.空 ...

百科释义

The first moment of area, sometimes misnamed as the first moment of inertia, is based in the mathematical construct moments in metric spaces, stating that the moment of area equals the summation of area times distance to an axis [Σ(a x d)]. It is a measure of the distribution of the area of a shape in relationship to an axis.