counterbore中文什么意思

沉孔

埋头孔

埋头直孔

平底扩孔钻

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台阶孔

柱坑

锥口孔

钻平孔底

镗（沉头）孔

• counterbore cutter:    平底扩孔钻头
• counterbore drill:    平底扩孔钻
• counterbore guidance:    扩孔钻导柱

例句与用法

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1. Counterbores with parallel shanks and solid pilots
   直柄和实心导向销的平底锪钻
2. Detachable pilots for counterbores and countersinks
   扩孔钻和沉头钻用可拆卸导杆
3. Counterbores with morse taper shanks and detachable pilots
   带可换导柱锥柄平底锪钻
4. Fasteners - counterbores for hexagon bolts and nuts
   六角头螺栓和六角螺母用沉孔
5. Counterbores with morse taper shank and detachable pilot
   莫氏锥柄和可拆卸导杆沉头钻

英文释义

名词

1. a bit for enlarging the upper part of a hole
   同义词：countersink, countersink bit