Rotational speed

Rotational speed (or speed of revolution) of an object rotating around an axis is the number of turns of the object divided by time, specified as revolutions per minute (rpm), revolutions per second (rev/s), or radians per second (rad/s). Rotational speed is equal to the angular velocity ω (or Ω) divided by 2π.

单词	Rate of rotation
释义	Rate of rotation 英语百科 Rotational speed Rotational speed (or speed of revolution) of an object rotating around an axis is the number of turns of the object divided by time, specified as revolutions per minute (rpm), revolutions per second (rev/s), or radians per second (rad/s). Rotational speed is equal to the angular velocity ω (or Ω) divided by 2π.
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Rate of rotation

Rotational speed