The surface roughness values of the machined surface (R a and R q) are measured using the Mitutoyo Surftest SJ 210 machine. The cut-off length used was chosen as 4 mm, and the measurements are made at ...

光滑塞规充足货源.光滑环规量大质优可定制 光面塞规充足货源.光面环规量大质优可定制 对表环规充足货源.校对环规量大质 ...