表面洁净无肉眼可见裂痕,刮伤,变形等缺陷;The target surface clean without eye visible defects such as cracks, scratches and other deformations 表面杂质或孔洞不大于 2.0mm2;Inclusions or Single voids in the surface should not be larger than 2.0mm2
单个靶管/块表面(1.0~2.0)mm2 的杂质或孔洞不多于 1 个。Inclusion or Void of
(1.0~2.0)mm2 is not more than one in the same segment |