70 元券预售MagnetronsTravelingKlystrons¥18380去看看中国国际图书专营店发布了【预售】Klystrons, Traveling Wave Tubes, Magnetrons80 元券TubesWaveMagnetronsKlystrons¥26470去看看上海外文图书音像专营店发布了预订Microwave and MM Wave Vacuum Electron Devices: Inductive Output Tubes, Klystrons, Traveling Wave Tubes, Magnetrons,10 元券9781015181793FrequencyAutomaticKlystrons¥2010去看看澜瑞图书专营店发布了【4周达】Automatic Frequency Control Systems for Reflex Klystrons [9781015181793]25 元券9781630817282KlystronsMicrowaveTraveling¥19180去看看澜瑞图书专营店发布了【4周达】Microwave and MM Wave Vacuum Electron Devices: Inductive Output Tubes, Klystrons, Traveling ... [9781630817282]25 元券9781608071845AmplifiersMagnetronsGyrotrons¥22330去看看澜瑞图书专营店发布了【4周达】Klystrons, Traveling Wave Tubes, Magnetrons, Crossed-Field Amplifiers, and Gyrotrons [9781608071845]