• 现在说说电子乐器了。除哈蒙德电风琴类乐器全是变换无线电真空管振荡而发声

    Now we finally come to electronic instruments. In these instruments sounds are produced by varying the oscillations of radio tubes with the exception of the Hammond organ.

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  • Sandia公司的Simmons博士注意到,传统灯泡最后一批还使用真空管装置,这项陈旧技术无线电大多数电视早就已经取代了

    Conventional light bulbs are among the last devices that use vacuum tubes, an old technology that has long been replaced in radios and most televisions, notes Sandia's Dr Simmons.

    youdao

  • Sandia公司的Simmons博士注意到,传统灯泡最后一批还使用真空管装置,这项陈旧技术无线电大多数电视早就已经取代了

    Conventional light bulbs are among the last devices that use vacuum tubes, an old technology that has long been replaced in radios and most televisions, notes Sandia's Dr Simmons.

    youdao

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