counter-boring

英['kaʊntərb'ɔːrɪŋ] 美['kaʊntərb'ɔːrɪŋ]
  • [机]钻柱坑,埋头孔
  • counter n.柜台;筹码;计数器;反驳adj.相反的adv.与…相反地v.反对;反击
  • planning n.规划;计划;设计v.plan的现在分词