平面不平度是实际平面相对某一假想平面而言。不平度的确定,在不同资料中,可概括分为三种方法,现以图1所示对某块平板的检测数据为例说明于下。1.取整个表面上各向联线中的最大不直度作 Plane roughness is the actual plane relative to a hypothetical plane. Roughness determination, in different materials, can be broadly divided into three kinds of methods, is shown in Figure 1 is a plate of test data as an example below. 1. Take the largest surface of the line in the largest non-straightness for all