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Terms containing direkt geheizte Glühkathode | all forms | exact matches only | in specified order only
| Subject | German | English |
| antenn. | direkt geheizte Glühkathode | filamentary cathode |
| antenn. | direkt geheizte Glühkathode I | directly heated cathode |
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| Subject | German | English |
| antenn. | direkt geheizte Glühkathode | filamentary cathode |
| antenn. | direkt geheizte Glühkathode I | directly heated cathode |