[填空题]
The angular momentum in the hydrogen atobkx (c .wcn4v;m is given both by the Bohr model and b4,ir5lb,i zmeb, o)+vi1yrk ey quantum mechanics. Compey4vzk b,i1l5ie +, orm,)ibrare the results for $L = mvr$.
$L_{\text{QM}}$ = $\hbar$ or $L_{\text{QM}}$ = $\hbar$