25 (五)材料与方法(materials and method) 一般分析性和实验性研究大约需要1500 字左右。 “材料”主要交待作者用什么具体实验 对象或什么具体的资料来进行研究。
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Poly (2, 6) - and poly (2, 7) - anthryl ethene derivatives as electroluminescent materials and method for preparing same.
聚(2,6)-及聚(2,7)-蒽基乙烯衍生物作为电致发光材料及其制备方法。
In chapter 2, the materials and method of our experiment are introduced, and some influential factors on the experiment are also analyzed.
第二章介绍了本文实验所用的材料以及方法，并就影响实验结果的一些主要因素进行了分析。
Materials and Method: ct and MRI examinations of 35 children with sacrococcygeal germ cell tumors proved by surgery and pathology were reviewed, retrospectively.
材料和方法：对35例经手术病理证实的骶尾部畸胎瘤和卵黄囊瘤的CT和MRI检查资料进行回顾性分析。
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