Surface roughness of transparency material is measured by means of light-cutting method and phase-contrast method.
运用光切法和相衬法对透明材料表面粗糙度进行测量。
To adopt white light digital speckle correlation method, so as to observe the coal body's deformation and destruction law in pick cutting course.
采用白光数字散斑相关的方法，观测截齿截割作用下的煤体变形破坏情况。
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