optical tape reader光带: light band; slit of light阅读: read器: implement; utensil; ware光带阅读机: photo tape reader，ptr磁带阅读器: magnetic tape reader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:光带阅读器，即可在微信中查询翻译
