counterbore的用法和樣例：
詞匯搭配
- counterbore for hexagon socket head bolt 內六角頭螺栓埋頭孔...
- counterbore guidance 擴孔鉆導柱
- carbide helical counterbore 硬質(zhì)合金螺旋锪鉆...
- counterbore guide 擴孔鉆導柱
- counterbore with guide 有導柱的平底擴充孔鉆...
- counterbore cutter head 擴孔鉆頭
- counterbore drill 平底擴孔鉆
- counterbore cutter 平底擴孔鉆頭...
