[填空题]
The Moon orbits the Earth such thah9g5 s zke4ft*t the same side always+y :npsuu *u)2nawcu, 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 c*n2cuyuw+us ),apu: nase, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$