[填空题]
The Moon orbits the Earth such that thea7c27,*vo v6yzqs b r(f ifx :00bvdzo same side always facez8ey ae8 *ny.us the Earth. Determine the ratio of the Moon’s spin angular momentum (about its own axis) to its oanyez . e8u*y8rbital angular momentum. (In the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$