略語大辞典 [Opt] 33 PS protected silver (mirror) 保護銀(反射鏡).protected silver (mirror); an optical reflector; ref. Au(bare gold), AG(bare silver), EG(enhanced gold), ES(enhanced silver), SES(super-enhanced silver), SSES(highest-reflectivity silver coating), MMR(maximum metal reflector), DES(dual-enhanc 丸善「略語大辞典」JLogosID : 11856606