“precambrian flora”的概念、定义、翻译、参考文献-科学参考

单词	precambrian flora
释义	precambrian flora Encyclopedia 理学古植物学释 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。
随便看	heat flow distribution heat flow, heat current heat flow meter by heat conduction Heat Flow Outside the House heat flux heat flux measurement heat flux sensor heat gain of animal housing heat generating and retention fibers heat generation inreactor components heat gradient Heath heath family Heath Ledger heath management of traditional Chinese medicine heat in blood heat increment heat index heating heating and ventilation system of power house heating boiler heating coil heating cutting heating degree-day heating effect

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