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How to sign: electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
Similiar / Same: vacuum tube, thermionic tube, electron tube, thermionic valve, tube
Categories: electronic device
Within this category: acorn tube, diode, electron multiplier, gas-discharge tube, klystron, magnetron, pentode, television-camera tube, tetrode, triode, X-ray tube
