| 释义 |
image orthicon- 英?[?imid? ??:θik?n]
- 美?[??m?d? ??rθ??kɑn]
英英释义Noun1. a now obsolete picture pickup tube in a television camera; electrons emitted from a photoemissive surface in proportion to the intensity of the incident light are focused onto the target causing secondary emission of electrons
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