synchronous RAM同步随机存取存储器synchronousadj.同时的；同步的synchronous generatormotor同步发电机电动机synchronous phase modifier同相同步机,同步整相器synchronous wave detection同步检波synchronous line interface服务级指示符synchronous pitch analysis音调同步分析synchronous control system同步控制系统synchronous overlap and ad同步叠加synchronous speed governor同步调速机synchronous rotating frame同步旋转坐标系synchronous storage method同步存储方法