spec. The name of various contrivances for imparting heat. A device used for the indirect heating of the cathode of a thermionic valve.
| 单词 | θ78468 |
| 释义 | the world > matter > physics > electromagnetic radiation > electronics > electronic devices or components > thermionic valve > [noun] > device used for indirect heating of (2) heater1940 spec. The name of various contrivances for imparting heat. A device used for the indirect heating of the cathode of a thermionic valve. Subcategories:— device reducing hum of (1) |
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