Blank detail specification for variable tuning capacitors type a in electronic equipments 电子设备用a类调谐可变电容器空白详细规范
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Blank detail specification for variable tuning capacitors type a fitted with integral pre - set capacitors type c in electronic equipments 电子设备用装有整体c类预调电容器的a类调谐可变电容器空白详细规范