[填空题]
The Moon orbits the pkg xzw0k7sx9*e3s: mE 3qnad: tdzkdb4o64+yarth such that the same side always faces the Earth. Determine the ratio of the Moon’s spin angular momentum (about its own axis) to its orbital angular momentum. (In the latter case, trekd4 3na6zyb 4+q:dtdoat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$