Phrases with «upstroke»

Tobalske discovered that the bird generates vortices on upstrokes that produce lift. (discovermagazine.com)
The upstroke of each wing beat produces a 1.3 - kilohertz low note, and the downstroke produces a 2.9 - kilohertz high note. (sciencemag.org)
The «Batbot» replicates the way a bat changes the profile of its wing between the downstroke and upstroke. (newscientist.com)
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