[填空题]
The Moon orbits the Enb 7s c//)y ,dw(tycbzarth such that the sam0i0ah+ loonefkcv,.sexxj ) cf6q9 *3 e side always faces the Earth. Determine the ratio of the Moon’s spin angular momentum (about its own axis) to its orbital angular momentum. (In the latter case, treatffi cksh0 j ec*. exalo9)qvn6+xo30, the Moon as a particle orbiting the Earth.) $\times10^{ -6}$