最后，系统介绍了动态应变仪及计算机数据采集和图形显示系统的工作原理。
Last, this paper explicate systematic dynamic strain gauge some principle about data acquisition and graphics display.
正应力图形和剪应力图形可以分为三种类型，分别对应压缩类变形、平面应变以及拉伸类变形。
The figures can be divided into three main types, which refer to compression, plain strain, and tension, respectively.
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