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前寒武纪植物
释义
前寒武纪植物
Encyclopedia
理学
古植物学
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precambrian flora
前寒武纪植物
前寒武纪(5.4亿年以前)和早古生代是藻类植物的时代。35亿年前或略早于35亿年前到大约15亿年的前寒武纪地球上只有细菌和蓝藻。它们都是原核生物。从15亿年前到寒武纪(5.4亿年前)地球上除细菌和蓝藻外,已有绿藻、红藻和褐藻。
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residual resistance factor
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residual resistivity ratio
residual resistivity ratio, RRR
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residual series
residual set
residual social policy model
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residual stress
residual stress analysis/residual stress testing techniques
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residual stress measurement
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residual structure
residual subgroup
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residual sum
residual sum of squares
residual t-design
residual variance
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