unipolar transistor单级: single stage; single level; ...型: mould; model晶体管: transistor; crystal valvenpn型晶体管: npn transisterpnp型晶体管: pnp transistor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:单级型晶体管,即可在微信中查询翻译