For video, that needs to happen at least 25 times a second if the eye is to be fooled into seeing continuous motion.
对视频而言，如果你想看到连续的画面，那刷新率至少每秒要进行25次。
2
The dual-reflex bandpass, due to the fact that its ports control cone motion over a wider range of frequencies, produces the least distortion and exhibits the best power-handling characteristics.