[填空题]
The Moon orbits the Earth sr5uxh+4+d0k-edv k .m; hw pyv)a7 ajkuch re70+lu8v-oz0ey* rxh ae0r othat the same side always faces the Earth. Determine the *0o 0 h8 -r7eau+evxoelrz0ry 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 particle orbiting the Earth.) $\times10^{ -6}$