[填空题]
The Moon orbits the Earth suchi /x3d w5l34tyqtiu8 e that the same side 9a,w:q t 1.tfm7gknx.cozs4y always faces the Earth. Determine the ratio of the Moon’s spin angular momentum (about its own axis) to its orbital angular momentum. (In 7 z.n 9, tfosm1yaqt4g wxc.:kthe latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$