[填空题]
The angular momentum 10 in the hydrogen atom is given both by themn1 jqje/ tlr e9;3zd6 Bohr j /t jhapq *c)ai/ri(:model and by quantum mechanics. Compare tha*jtai)(ip /hq/ cr: je results for $L = mvr$.
or $L_{\text{QM}}$ = $\hbar$. asdfasdofadsf