File:Diode vacuum tube.png
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Diode_vacuum_tube.png (382 × 396 pixels, file size: 19 KB, MIME type: image/png)
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 08:13, 29 July 2012 | | 382 × 396 (19 KB) | Onnowpurbo (talk | contribs) |
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