[填空题]
The Moon orbits the Eadn40f+) i1ebb ox:aza rth such that the same side always faces the Earth. Dodgcf; 4 kun bv3g:u;n t)xlw 2bum9lj, (v0r1etermine the ratio of the Moon’s spin angular momentum (about i,o n tvb3w bj;:ulr1l muc ;vk4u 0ngdx9g()f2ts own axis) to its orbital angular momentum. (In the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$