[填空题]
The Moon orbits the Earth such that the same2d0 06pr.n wu3d cghpc side always faces the kg.44oi mua7lEarth. Determine the ratio of the Moon’s spin angular momentum (about its own axis) to its orbital angular momentum. (In the4o. m 7lgku4ia latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$