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单词 θ78523
释义
the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > cathode-ray tube > [noun] > operating at ambient temperature (2)
reference tube1890

(a) a tube holding a sample to be used as a standard in an experiment, to which samples for testing are compared; (b) a cold-cathode gas-filled tube…

cold-cathode1929

a cathode that emits electrons at ambient temperature under the influence of a high voltage; usually attributive.

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更新时间:2024/12/22 22:29:49