(a) a small area struck by a beam of ions; (b) a dark spot in the middle of the screen of a cathode ray tube where the phosphor is damaged as a…
| 单词 | θ78519 |
| 释义 | the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > cathode-ray tube > [noun] > damage to tube > spot resulting from (1) ion spot1936 (a) a small area struck by a beam of ions; (b) a dark spot in the middle of the screen of a cathode ray tube where the phosphor is damaged as a… |
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