[填空题]
The angular momentum 10 in the hydrogen atom is git5inij 2 0xba 3dyex h+yj9s5;ven both by the Bohr model anmqgk6ush y8etc s)/ ,ok.jq5j6 9 civ*d by quantum mechanics. Compare the results for 8k h/ s*j6s)jqtoyucqg659,k imv. ce $L = mvr$.
or $L_{\text{QM}}$ = $\hbar$. asdfasdofadsf