[填空题]
The Moon orbits the Ealfp2y*;gu)wvwv 6lb1 . - ti3uyhao(6k5mof nuhdm,6 rth such that the same side always faces the Earth. Determine the ratio of the Moon’hof,-d3 uo6h a5.6yumn mt(iks spin angular momentum (about its own axis) to its orbital angular momentum. (In the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$