略語大辞典 [Opt] 29 DES dual-enhanced silver (mirror) 二重改良銀反射鏡. dual-enhanced silver (mirror); an optical reflector; ref. Au(bare gold), Ag(bare silver), PS(protected silver), EG(enhanced gold), ES(enhanced silver), SES(super-enhanced silver), SSES(highest-reflectivity silver coating), MMR(maximum metal 丸善「略語大辞典」JLogosID : 11871582