After the workpiece has been cleaned, liquid penetrant is applied in a suitable manner so as to form a film of the penetrant over the surface for at least 13mm beyond the area being inspected.

• 渗透：待工件清洁干净后，渗透剂就需要以一种合适的方式施加，以便在超过被检区域至少13毫米的表面上获得一薄层渗透剂。