[填空题]
The Moon orbits the Earth such that the same side a,y36ht; sh wmplceyup*g 8i: 8 h34kgf0:uax8jl;43 gbtoxmgs ways faces the Earth. Determine the ratio of the Moon’s spin angular momentum (about its own axis) to b;u4ugl*x p: e8gifa o34ty8: sk83cxjghmg0 its orbital angular momentum. (In the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$