And insulating ring technology is adopted to further improve input impedance influenced by insulating resistance of printed circuit board.
印刷电路板上加绝缘环，消除了线路板绝缘电阻对放大电路输入阻抗的影响。
And insulating ring technology is adopted to further improve input impedance influenced by insulating resistance of printed circuit board.
印刷电路板上加绝缘环，消除了线路板绝缘电阻对放大电路输入阻抗的影响。
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