【电】 阴极电位

infra-red image pick-up tube cathode ray tube

hot-cathode X-ray tube

lens, magnetic with permanent magnets, cathode ray tube

glow cathode (thermionic cathode)

cathode tube

gas-fille d discharge tube with gaseous cathode

microchannel plate cathode-ray tube\nMCPCRT\n电子

discharge tube, photoelectric with photo-emissive cathode