There are multiple states with the same energy, for example E 211 = E 121 = E 112 {\displaystyle E_{211}=E_{121}=E_{112}} .
同じエネルギーをもつ複数の状態がある（たとえば E 211 = E 121 = E 112 {\displaystyle E_{211}=E_{121}=E_{112}} ）。