synchronous ion同步离子synchronousadj.同时的；同步的synchronous altitude spin stabilized experiment同步高度自旋稳定实验synchronous-altitude communications satellite同步高度通信卫星synchronous communication electrodynamic system同步通信电气动态系统Synchronous-Altitude Meteorological Satellite同海拔的气象卫星synchronous pavement surface dressing equipment同步碎石封层设备synchronous desulfurization and denitrification同步脱硫脱氮Synchronous Equipment Timing Physical Interface同步设备定时物理接口Synchronous and asynchronous delivery support.同步和异步交付支持。synchronous-asynchronous encounter probability丰枯遭遇synchronous altitude gravity gradient experiment同步高度重力梯度实验