GOST 19438 12-1975 Low-power electronic tubes and valves Methods of measurement of plate current and currents of grids having positive potential《小功率电子管 相对于阴极有正电位的阳极电流和栅极电流的测量方法》.pdf

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GOST 19438 12-1975 Low-power electronic tubes and valves Methods of measurement of plate current and currents of grids having positive potential《小功率电子管 相对于阴极有正电位的阳极电流和栅极电流的测量方法》.pdf_第1页
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