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countersinking worker sparse htm answer up

countersinking

英['kaʊntəsɪŋkɪŋ]

核心词义

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.

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