[填空题]
The Moon orbits the Earth such that the samjwn*w ocwwo88 ql7xpu;71 b8be side always faces the Earthts(ai.ay, l w0. Determine the ratio of the Moon’s sw(slai,.y0 t apin angular momentum (about its own axis) to its orbital angular momentum. (In the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$