core-drill

英['kɔːrdr'ɪl] 美['kɔːrdr'ɪl]
  • 套料钻
  • core n.核心;果心;要点vt.挖去果核
  • program n.节目;计划;程序;课程;节目单vt.编制程序;安排;指定
名词 core drill:
  1. a drill that removes a cylindrical core from the drill hole