英语词汇“peedee belemnite”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	peedee belemnite
释义	PeeDee belemnite PeeDee belemnite [‚pē‚dē bə′lem‚nīt] (geochemistry) Limestone from the PeeDee Formation in South Carolina (derived from the Cretaceous marine fossil Belemnitella americana), the carbon and oxygen isotope ratios of which are used as an international reference standard. Abbreviated PDB. AcronymsSeePDB
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PeeDee belemnite