perforator

n. 穿孔的人, 穿孔器, 打孔机, 剪票夹 [计] 穿孔机

词形变化

perforators 复数 perforators

释义与例句

n.
  1. 1.

    A tool or machine that makes holes, or perforates, materials such as paper and card.

  2. 2.

    A machine that can bore a tunnel underground

  3. 3.

    A perforating artery or vein

    医学

词源

From perforate + -or.

来源：wiktionary