词汇 | counterbore |
释义 | counterborecounterbore[kauntəˈbɔ:]n.1.■沉孔, 埋头孔2.■埋头钻; 平底扩孔钻 词性变化counterbore[kauntəˈbɔ:]vt.1.■(用平底扩孔钻)扩孔[锪孔, 镗孔, 镗阶梯孔] 特殊用法carbide helical counterbore1.■硬质合金螺旋锪钻counterbore for hexagon socket head bolt1.■内六角头螺栓埋头孔counterbore of nozzle1.■漏嘴下扩孔counterbore with guide1.■有导柱的平底扩充孔钻 |
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