GOST 21106 5-1977 Oscillator modulator and regulation tubes anode dissipated power more than 25 W Methods of measurement of filament current and voltage《阳极耗散功率超过25W的发射调制与控制管 灯丝电流与电.pdf

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GOST 21106 5-1977 Oscillator modulator and regulation tubes anode dissipated power more than 25 W Methods of measurement of filament current and voltage《阳极耗散功率超过25W的发射调制与控制管 灯丝电流与电.pdf_第1页
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