[填空题]
The Moon orbits the Earth such that the same sh17inkwe8d 5 tj( m7nside always faces the -wd5iaku (ggk)sl. n- Earth. Determine the ratio of the Moon’s spin angular momentum (about its own axis) to its orbital angular momentum. (In the latter case, trsk- w5gld-i.g uk)an(eat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$