略語大辞典 [Opt] 27 IRIRDR infrared-infrared double resonance; an (原子や分子の)赤外-赤外二重共鳴.infrared-infrared double resonance; anoptical resonant interaction with atoms or molecules; [Opt:L:Phys]. 丸善「略語大辞典」JLogosID : 11879017