[填空题]
The Moon orbits the Earth s7bnq5 : nn).;uuu:3 4pvkaskwhl 6 ohsuch that the samei ;+ptsb9 +ntwof0q)b 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, treat the Moon as a parts wt0)if+q+ ;bopnb9ticle orbiting the Earth.) $\times10^{ -6}$