略語大辞典 [L] 23 NIAP negative ion assisted preionization 陰イオン補助予備電離. エキシマーレーザーの放電ガス予備電離方式.negative ion assisted preionization; a preionization technique for excimer lasers; uses electrons liberated from areservoir of negative halide ions by photoionization to provide the preionization of gases; a two step t 丸善「略語大辞典」JLogosID : 11862849