[填空题]
The Moon orbits the Eis8)ki0gox+2lg sy;hart v1j cn;;-)wdpjg n3.3x i x.:u sy1lj6cokbirh such that the same side always faces the Earth. Determine ts1bx ;;w :l-. d jj)cvr gj63 o.cnkxpu31iinyhe ratio of the Moon’s spin angular momentum (about its own axis) to its orbital angular momentum. (In the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$