piercing by electric arc

• 电弧穿孔

piercing by electric arc的用法和样例：

例句

1. However, perforation of the colorectum by an IUCD is extremely unusual.
   但是子宫内避孕器引致直肠穿孔的病例就极为罕见。
2. The article studied the geometrical dimensions and surface quality of the shells in the deformation zone of piercing.
   研究了穿孔变形区中毛管的几何尺寸和表面质量。