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.
它本
是被用作调幅收音机中
本振和混频管，并且被大量生产出以实现这个用途。
)，许许多多()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.
它本是被用作调幅收音机中本振和混频管，并且被大量生产出以实现这个用途。
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