[填空题]
The Moon orbits the Earth subnh-t3t rn,)qam 4v6zch that the same side always fj,n7.t; lv wcxaces the Earth. Determine the ratio of the Moon’s spin angular , wclxn7vjt .;momentum (about its own axis) to its orbital angular momentum. (In the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$