[填空题]
The angular momentum 10 in the hydrogen atom is given d.gakm, u)ztuqe .pp.bl/k(2both by the Bohr moy2 c;if/b 3k :8utfe;d3pk zqidel and by quantum mec2bi /i3:dzfek;f8uqk3t c yp;hanics. Compare the results for $L = mvr$.
or $L_{\text{QM}}$ = $\hbar$. asdfasdofadsf