略語大辞典 [Opt] 29 HPT heterostructure(or heterojunction) photo-transistor ヘテロ構造光トランジスタ. 半導体光検出器.heterostructure(or heterojunction) photo-transistor; a photo-detector; [Opt:C]. 丸善「略語大辞典」JLogosID : 11877198