“diameter group”的概念、定义、翻译、参考文献-科学参考

单词	diameter group
释义	diameter group [dī`am·ǝd·ǝr ´grüp] ^{MECHANICAL ENGINEERING} A dimensionless group, used in the study of flow machines such as turbines and pumps, equal to the fourth root of pressure number 2 divided by the square root of the delivery number.
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