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.
它本来是
调
收音机中的本振和混频管，并且大量的生产出来以实现这个途。
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.
它本来是调收音机中的本振和混频管，并且大量的生产出来以实现这个途。
The maximum of B along elevation direction is closely under the central section of coil.The B of equiamplitude magnetic field is increased by increasing of the output current ...
等高频磁场的磁感应强
随高频
源输出流的增加而增加,磁场调处理能提高磁场内的磁感应强,提高调波信号的
压,可有效提高磁场内的磁感应强。
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