synchronous RAM同步随机存取存储器synchronousadj.同时的；同步的synchronous induction motor同步感应电动机Synchronous Orbit Satellite同步轨道卫星synchronous controller unit同步控制器synchronous logic simulator同步逻辑模拟器synchronous audio interface同步声频接口synchronous buck converters同步降压变换器synchronous mode comparator同步式比较器synchronous loss of locking同步失锁synchronous protective code同步保护码synchronous relay satellite同步中继卫星