biconial reflectorbiconical reflector双: two; twin; both; dual锥形: taper; cone; cone-shape反射镜: speculum; mirror; reflector双锥形反射器: biconical reflector锥形反射镜(二)锥形反射器: conical reflector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:双锥形反射镜，即可在微信中查询翻译
