[填空题]
The Moon orbits the Earth fiz.69qfc7n .avd bj5such that the same side always faces k)6 *x qysfo*zthe Earth. Determine the rzkfy6)x * *soqatio of the Moon’s 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.) $\times10^{ -6}$