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hopaniods
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hopaniods
Encyclopedia
理学
藿烷类化合物
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hopaniods
藿烷类化合物
由一个环戊烷并全氢化䓛结构为母核的生物标志化合物。
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question and answer for unstructured text
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question answering system
question answering system (QAS)
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questioning of the witnesses and victim
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