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pollen spectrum
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pollen spectrum
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理学
花粉谱
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pollen spectrum
花粉谱
从地层中某个层位的单个样品中获得的不同种类的花粉、孢子的相对丰度(百分比),在一水平线上显示的棒状图或曲线图。
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international 1020 system
International Academic Conference on Chinese Ancient Operas and Culture at the Turn of the Century
International Academic Conference on Mei Lanfang's System of Dramatic Performance
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international agreement on exchange of information on tax matters
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