double heterojunction laserdouble heterostructure laser双: two; twin; both; dual异质: neterogeny; alloplasm; heter ...结: p-n junction型: mould; model激光器: laser; optical maser; laser ...下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:双异质结型激光器,即可在微信中查询翻译