外部缺陷 meaning in Chinese

external defects

External defects : undercut , overip , arc pit , gas cavity in surface , crack in surface
外部缺陷：咬边、焊瘤、弧坑、表面气孔、表面裂纹。
Refractory products . measurement of dimensions and external defects of refractory bricks . part 1 : dimensions and conformity to drawings
耐火材料制品.耐火砖的尺寸测量和外部缺陷.第1部分:尺寸和与图纸的一致性
Refractory products . measurement of dimensions and external defects of refractory bricks . part 2 : corner and edge defects and other surface imperfections
耐火材料制品.耐火砖的尺寸测量和外部缺陷.第2部分:角边缺陷和其它表面缺陷