[填空题]
The Moon orbits the Earth such that the same side l uh/4li8vndcstf. 02apu.:halways faces the -ig4giehceup3+;v/pcr bf:7 Earth. Determine the ratio of the Moor/;hu3gpi-c 7gfepe b:+ 4v icn’s spin angular momentum (about its own axis) to its orbital angular momentum. (In the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$