【电】 阴极自偏压

infra-red image pick-up tube cathode ray tube

hot-cathode X-ray tube

lens, magnetic with permanent magnets, cathode ray tube

discharge tube, gas-filled with solid cathode

cathode tube

positioning the cathode spot on the liquid-pool cathode of a discharge tube

microchannel plate cathode-ray tube\nMCPCRT\n电子

thermionic-cathode X-ray tube