同上符号 ditto mark

同步字符 sync character ; synchronous Character ; SYNC ; synchronization character

与合同符合 conform to the contract

使用相同符号 Single Symbol

帧起始定界符/同步 Synch

同步闲字符 SYN synchronous idle ; synchronous idle character

字符同步 character synchronous ; character synchronization ; Character or word synchronous

同属识别符 generic identifier

面向字符的同步协议 BSC

同步空闲字符 synchronous idle character ; SYN SYNchronous idle character