On dictating equipment, the process of making reproducing a recording by means of a playback head or a combined head. He implies that several heads should have rolled; none did. 在口述记录设备上,利用放音磁头或组合磁头回放录音的过程。他暗示到一些头目应当被记录,但一个也没有。
Take out the white protector around the recording/ playback head before you use this unit for the first time. 首次启用本装置前,请取出在录/放音磁头周围的白色保护片。
Radar data playback. The head of each data frame has the reception time interval with the previous frame. The time interval would as clock cycle when replay data. It help to reappearance the real air-status. 3. 在每个数据帧的头部附加与前一数据帧的接收时间间隔,作为回放该帧数据的时钟周期,从而在回放时精准重现雷达数据时序间隔;3.双机数据同步功能。