An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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critical velocity
  تندای ِ پرژنی  
tondâ-ye paržani
Fr.: vitesse critique  

  1. Velocity of → fluid through a pipe at which the motion changes from → laminar to → turbulent flow.

  2. Same as → break-up velocity.

See also: → critical; → velocity.