中间块检验符[ITB] bcc block character check: 块特性校验bcc block check character: 块校验字符,字块检验字符; 字块检验字符block character check: 块字符检验; 块字符校验block check character: 方块检查字符; 块校验字符; 校验法; 信息组检验符; 字块检验字符block check character (bc: 方块检查字元下载手机词典可随时随地查词查翻译