[填空题]
The Moon orbits the Eartspf .h4w tzdyqm.)-de.c (/ lmhoil) :zpoft/ yi0cp z)8. cj8i such that the same side always faces the Earth. Determine the ratio of the Moon’s spin angular momentum (about its own axis) to its orbital angular momentum. (In the lattoic ifi.c: y0 ) tolz)/8pj8zper case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$