I checked to see if the needle indicating volume was oscillating.我查看了那根音量指针是否在摆动。Waves are related to oscillating systems.波动与振动系统有关.In each cycle of operation the particle picks up energy from the oscillating eletric fie...
Waves are related to oscillating systems.波动与振动系统有关.I checked to see if the needle indicating volume was oscillating.我查看了那根音量指针是否在摆动。In each cycle of operation the particle picks up energy from the oscillating eletric fie...