[填空题]
The Moon orbits the Earth such that the same side always faces : s(;9ffnxzqqs6; zfp the Eaf,l2ogsp/9x5myg ab * * ji/:32eqsw5 vsu mmmrth. 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 partivgw /eomy2 g xj:i32fu5m*p*9 saq/m,l 5sbsmcle orbiting the Earth.) $\times10^{ -6}$