synchronous RAM同步随机存取存储器synchronousadj.同时的；同步的synchronous modulation rate同步调制率synchronous buck regulators同步降压稳压器synchronous selector system同步选择制synchronous blinking jamming同步闪烁干扰Synchronous electric machine同步电机synchronous interface module同步接口模块synchronous and asynchronous同步和异步synchronous distant learning同步远距教学synchronous frame recognizer帧同步识别器synchronous surface dressing同步碎石封层