This article follows up the change of lamella structure in PAN fiber spinning, preoxidation and carbonization process using electron microscope in order to find the evolution of sheet structure.
为了研究原丝中片层微观组织的演变性，借助电子显微镜，跟踪了片层组织结构在纺丝、预氧化和炭化过程中所发生的变化。
That main panel needed to look dimensional, so the laminate surface sheet was mounted to a pan-formed sign, made from a sheet of 4x 10white. 040 aluminum pre-painted sheet.
如果要使主面板看起来有立体感，就要把成形的字母安装在层压板表面，该层压板是由4英尺x10英尺的白色。040铝质薄板做成的。
That main panel needed to look dimensional, so the laminate surface sheet was mounted to a pan-formed sign, made from a sheet of 4x 10white. 040 aluminum pre-painted sheet.
如果要使主面板看起来有立体感，就要把成形的字母安装在层压板表面，该层压板是由4英尺x10英尺的白色。040铝质薄板做成的。
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