vertical synchronizing pulse

例句：

1. 1. The vertical syncpulse is used to synchronize the video and audio signals.
   垂直同步脉冲用于同步视频和音频信号。
2. 2. In video editing, the vertical sync pulse is crucial for maintaining the frame rate.
   在视频编辑中，垂直同步脉冲对于保持帧率至关重要。
3. 3.The engineers carefully monitored the vertical sync pulse to ensure smooth playback.
   工程师们仔细监控垂直同步脉冲以确保流畅播放。