地球的轨道速度，称之为轨道,物体的角速度，它按照一定的,角度速度旋转。
The Earth has an orbital velocity, v I call it v orbital, and there is on the object the angular velocity, It goes around with a certain angular velocity.
特别地，取原点,让物体以一定的角速度，围绕原点旋转。
Instead of just somewhere,maybe I will have the origin,and I am trying to make it go around the origin in a circle at a certain angular velocity.
对于满足一定条件的脉冲星系统，证明了在极轴处的等离子体的角速度和电荷密度趋于零。
For the pulsar system which satisfies some conditions, we proved that the angular velocity of plasma and the charge density go to zero at the pole.
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