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特異点
Wikipedia definition
1. Prandtl–Glauert singularityThe Prandtl–Glauert singularity is the prediction by the Prandtl–Glauert transformation that infinite pressure conditions would be experienced by an aircraft as it approaches the speed of sound. Because it is invalid to apply the transformation at these speeds, the predicted singularity does not emerge. This is related to the early 20th century misconception of the impenetrability of the sound barrier.
Read “Prandtl–Glauert singularity” on English Wikipedia
Read “プラントル・グロワートの特異点” on Japanese Wikipedia
Read “Prandtl–Glauert singularity” on DBpedia

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