To avoid sampling bias, they restricted their analysis to one group of animals—the bivalve molluscs—that fossilise well.
为了防止取样的偏颇,他们将分析的对象限制在一类化石记录保存完——双壳类软
。
To avoid sampling bias, they restricted their analysis to one group of animals—the bivalve molluscs—that fossilise well.
为了防止取样的偏颇,他们将分析的对象限制在一类化石记录保存完——双壳类软
。
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