File:Equation 1 Quartz R1-cut.jpg
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Invention of Temparature- Insensitive Quartz Oscillation Plate Enabling HIghly Stable Communications and Clocks, 1933:jpeg file of equation 1
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current | 13:33, 7 January 2016 | 1,654 × 2,339 (47 KB) | R1CUTQUARTZ (talk | contribs) | Invention of Temparature- Insensitive Quartz Oscillation Plate Enabling HIghly Stable Communications and Clocks, 1933:jpeg file of equation 1 |
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