This paper describes the principle, scheme and implementation of error control for Group 3 document facsimile apparatus, based on CCITT recommendation on the standard of error correction mode(ECM) for Group 3 apparatus.是什么意思_This paper describes the principle, scheme and implementation of error control for Group 3 document facsimile apparatus, based on CCITT recommendation on the standard of error correction mode(ECM) for Group 3 apparatus.在线翻译_英语_读音_用法_例句