v. 钻孔装埋，打埋头孔( countersink的现在分词 ); 精选例句 高考 1、 Point - to - point systems are suitable for hole - machining operations such as drilling, countersinking, counterboring , reaming , Boring, and tapping. 点位系统适用于钻孔 、 锪 孔、扩孔 、 铰孔 、 镗孔 、 攻丝等孔加工. 来源:互联网