不合格钢的英文

• off-grade metal
• unsound steel

• 不合格:    not up to standard
• 钢:    sharpen; strop; whet
• 合格钢材:    qualified steel
• 不合格:    unqualified; below grade; below proof; off-grade; off-specification; substandard 不合格的医务人员 unqualified medical worker; 不合格部件[零件] rejected part; 不合格产品 off-test product; subquality product; 不合格货物 disqualified goods; 不合格试件 failed test piece
• 合格或不合格:    acceptance or rejection