木制件表面粗糙度比较样块母模的检测

MEASUREMENT OF MASTER SPECIMENS OF SURFACE ROUGHNESS COMPARISON SPECIMENS OF WOODEN PIECES

木制件表面粗糙度比较样块母模的检测除表面纹理符合要求，无结构性缺陷外，主要检测结果的公称值偏差和标准编差要符合标准规定。且有足够的标准面面积。通过对样块母模的检测证明标准制定合理，平均值偏差和标准偏差符合木制作表面粗糙度特性，样块母模的检测为面积法检测木制件表面粗糙度提供了必要的条件。

The best way of measuring surface roughness is to use comparison specimens.The surface roughess comparison specimens of wooden pieces are used to assess the roughness of wooden pieces by tactile and visual comparison,Whose texture'and process method are,as nearly as possible.the same as those of the real surfaces.They are the references for choosing roughess.The measuremert of master specimens must meet the standard is nominal value deviation.standand deviation and no irregularities.have enough standard aera.