bcd binary coded decimalbinary coded decimal bcd二进制: binary system编码十进制数: coded decimal number二进制编码十进制数字: bcdd =binary-coded decimal digit延伸二进制编码十进制数: extended binary coded decimal二进制编码十进制: binary coded decimal system; binary-coded decimal system下载手机词典可随时随地查词查翻译