irrotational

/ir-oh-tey-shuh-nl/US // ˌɪr oʊˈteɪ ʃə nl //

非旋转式,非旋转型,非旋转式的,非旋转的

Definitions

adj.形容词 adjective

A stream line is the line, straight or curved, traced by a particle in a current of fluid in irrotational movement.
It is important to distinguish between two types of strain: the “rotational” type and the “irrotational” type.
A second-order effect on direction may therefore be produced by irrotational motion, but not a first-order effect.