bar code check character [自] 条码校验符
Sorting technologies in postal services, including optical character recognition (OCR), video complement and address check via bar code have reached the world's top level.
邮政光学字符识别（OCR）、视频补码、码址校验等分拣技术处于世界领先水平。
youdao
应用推荐
模块上移
模块下移
不移动