Its purpose in life was to be the local oscillator and mixer in AM radios, and a kazillion of them were made to fill that purpose.
它
来是被用作调幅收音机中的

混频管,并且被
量的生产出来

这个用途。
机
荡器Its purpose in life was to be the local oscillator and mixer in AM radios, and a kazillion of them were made to fill that purpose.
它
来是被用作调幅收音机中的

混频管,并且被
量的生产出来

这个用途。
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