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Electronic engineering
Electronic engineering is an engineering discipline focused on the design, fabrication, testing and operation of circuits, electronic components, devices, and systems.
Industry: Engineering
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Electronic engineering
多普勒效應
Engineering; Electronic engineering
一波源和觀察者有相對運動時出現的頻率的變化。波的頻率增加 (波長縮短了) 作為源和觀察員接近對方 ; 頻率減少 (波長變為更大),從彼此的源和觀察員消退。這種效應經常觀察到的聲波,作為當汽車喇叭的音調似乎車臨近上升和下降,因為這輛車通過。效果也是明顯的在所有波長的電磁波輻射的。它會影響衛星通信和空間通信的 ...
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