等速圆周运动
A small ball is making circular motion at the uniform velocity, the centripetal force has suddenly increased, it is proved that the small ball will generally make a spiral motion.
详细讨论了当向心力突然增大后,原来作匀速圆周运动的小球其运动轨迹的变化情况,证明了小球将作螺线运动。
The doctrine of uniform circular motion became embedded in Greek thought.
匀速圆周运动的信念已深入希腊人的思想中.
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