control hole meaning in English

标志孔
控制孔

At present , company has two fabrication lines specially designed for welding h section , advanced cutting , welding , assembling , rectifying , digital controlled hole drilling machine , blasting and coating facilities , level ii steel structure design software x - steel ( originated from finland ) and pkpm
目前拥有焊接h型重钢生产线两条，拥有先进的切割、焊接、组立、矫正、数控制孔、抛丸、喷涂等设备；拥有先进的钢结构二次设计专业软件x - steel （芬兰进口）和pkpm 。