They are used in TV, telecamera,audio andvisual recorder,microprocessor and other electronic equipment for resonance ,osilating coupling, delay, filter, trap, choke and etc.
To try teaching drones the language of hand signals Mr Song and his colleagues made a series of videos in which various deck officers performed to camera a set of 24 commonly used gestures.
、
他电子设备中起谐
、
、
合、延迟、滤波、陷波、扼流等作用。
-科技
机读懂手语，Yale Song和他的同事制作
挥员对着
