Laboratory equipment takes over for the
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R.H.O.
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Article
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1943
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Elsevier Science
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English
โ 55 KB
Laboratory Equipment Takes Over for the Elements.--Engines for airplanes of the future are constantly being tested by the Army Air Force to determine performance at different altitudes, temperatures and humidities. They are tested not only at altitudes as high as 40,000 feet, where temperatures drop