理解五形态理论的视角至关重要，须从“世界历史”的视角去理解它。
It is vital to understand five formation theory. We must understand it from the Angle of world history.
近十余年来，史学界开始反思并重新认识中国古史分期问题，逐渐认识到五形态的模式并不符合中国历史实际。
The historiography circle began to recognize and retrospect Chinese ancient history stages during the recent ten years and realized that the usual five stages mode didn't accord with Chinese history.
利用原子吸收分光光度法对中药川芎中锌、锰、铁、钙、镁五种元素的形态进行了研究。
Speciation of Zn, Mn, Fe, Ca, Mg in Ligusticum wallichii Franch was analyzed by atomic absorptionspectrometry.
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