The experiment device schematic diagram is shown in the drawing 1 of the abstract and can be used to measure the ambipolar diffusion constant of electron spin;

实验装置原理图如摘要附图1所示，可以测量电子自旋的双极扩散常数；

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The mechanism of High speed spin drawing for manufacturing copper inner fin tube is studied systematically, especially the process and parameters of inner fin formation arc analysed.

对内螺纹理片铜管的高速旋压拉伸成形加工机理进行了系统研究，分析了加工过程及参数。

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The mechanism of High speed spin drawing for manufacturing copper inner fin tube is studied systematically, especially the process and parameters of inner fin formation arc analysed.

对内螺纹理片铜管的高速旋压拉伸成形加工机理进行了系统研究，分析了加工过程及参数。

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