vorticity

vor.tic.i.ty

n.（名词）
pl. vor.tic.i.ties
Physics A measure of the rate of rotational spin in a fluid.
【物理学】 涡旋测量：测量涡轮在液体中的旋转率
Meteorology A measure of the spin of an air mass such as a low- or high-pressure weather system.
【气象学】 气压涡度测量：测量气团如高低压气象系统的旋转