“nominal diameter”的概念、定义、翻译、参考文献-科学参考

单词	nominal diameter
释义	nominal diameter [`näm·ǝ·nǝl dī`am·ǝd·ǝr] ^GEOLOGY The diameter computed for a hypothetical sphere which would have the same volume as the calculated volume for a specific sedimentary particle. Also known as equivalent diameter.
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