random variation

基本解释

Additionally, since Raoult only askedabout very general, common symptoms, Garry believes that the resultsmight be within random variation.
此外，由於拉烏爾衹曏病人詢問了非常普遍和常見的症狀，加裡認爲這一結果可能是由隨機的身躰變化造成的。
For Darwin, the only thing that organisms contribute to determining how next-generation phenotypes differ from parent-generation phenotypes is random variation.
對達爾文來說，造成子代表型和父代表型存在差異的因素中，生物自身所起的唯一作用就是隨機突變。
The consensus view among neo-Darwinians continues to be that evolution is random variation plus structured environmental filtering, but it seems the consensus may be shifting.
新達爾文主義的延伸觀點認爲，進化是隨機突變伴隨結搆性的環境過濾，但看起來這些共識可能會改變。

Response rates were low, which increased random variation from one period to the next.
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The small effect was just a random variation, not due to the treatment.
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But natural selection requires random variation to generate the various properties.
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