“Workability index” of fireclay refracto
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Article
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1947
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Elsevier Science
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English
⚖ 141 KB
NATIONAL I~UREAU OF STANDARDS NOTES. ' 3II movement of this diaphragm causes fluctuations in the output of the pick-up coil. The action is similar to that of the device used as a phonograph pick-up. With a slight modification, the device may be used as a thermometer. A strip of bi-metal of convenie