[填空题]
The Moon orbits the Earth such t,ghmgxc5 4-hu hat the same t59 wdiwsss/1d b/gm)side always faces the Earth. Determine the ratio of the Moon’s spin angular momentum (about its own axis) to its orbital angular modb1 5digs/ mww/tss 9)mentum. (In the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$