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重水在50°以上,迄今尚无较为准确之测量。作者用一具16ml容量之水晶比重瓶,在25°至100℃间,测得重水之密度。茲引用25°以下已知之数值,制成一重水密度表,自其冰点迄沸点,每隔5度,列示其密度之数值。此等数值之准确度,约为十万分之五。The density of heavy water has been determined between 25° and 100℃. Using the known data below 25°, we are able to construct a density table for heavy water between its freezing and boiling points with an accuracy of five units in the fifth decimal place. Figures are given to show the density difference between heavy water and ordinary water and also their density ratio, which tends to pass over a maximum at a temperature not far above the boiling point.
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