[填空题]
The Moon orbits the Eartk,t h14vlzn c5h such that the same side alwa6;r u bul5c6q)2vgodp ys faces the Earth. Determine the ratio of the Moon’s spin angular momentum (about its own axis) to its orbital angular momentum. (In the lodq 6vl52u gp; 6)rcbuatter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$