然后通过议案开普勒定律，它可以计算出恒星的质量。
Then through Kepler's laws of motion, it's possible to calculate the mass of the star.
今天我们要讨论，行星轨道，和著名的开普勒定律。
Today, I will talk to you about elliptical orbits and Kepler's famous laws.
在谈到轨道和开普勒定律时，我会详细介绍这一点的。
We'll talk about this much later when we deal with orbits and with Kepler's Law.
而根据开普勒定律，随着距中心距离的增加环绕速度应该呈几何递减。
Outside the nucleus the rotational velocity would decrease geometrically with distance from the center, in conformity with Kepler's law.
Christopher Wren打赌如果有人能用平方反比定律推论开普勒定律，他就会将一本价值40先令的书送给这个人。
He would give a book worth 40 shillings to anyone who could deduce Kepler's laws from the inverse-square law.
Christopher Wren打赌如果有人能用平方反比定律推论开普勒定律，他就会将一本价值40先令的书送给这个人。
He would give a book worth 40 shillings to anyone who could deduce Kepler's laws from the inverse-square law.
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