[填空题]
The Moon orbits the Earth such tha,l4h wedr ,5but the same side always fac2hn,h(8knq ovbj1 p)6g dw2my es the Earth. Determine the ratio of the Moon’s spin o 6hqw v)pnk j1m2(h2ynb,8dgangular momentum (about its own axis) to its orbital angular momentum. (In the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$