countersink
n.
1. 皿锥,埋头孔,暗钉眼
v.
1. 张扪孔口,钻孔装埋,打埋头孔
vt.
1. (-sunk
)钻埋头孔， 锥形扩孔， 冲锥形沉孔， 划尖底眼
名词countersink
1. a hole (usually in wood) with the top part enlarged so that a screw or bolt will fit into it and lie below the surface
2. a bit for enlarging the upper part of a hole
动词countersink
1. insert (a nail or screw below the surface, as into a countersink)
同义词：set
countersink
n.
1. 埋头孔， 锥口孔
2. 埋头钻， 锥口钻， 尖底锪钻
countersunk
adj. 埋头的
emery countersink
金刚砂埋头钻
snail countersink
螺旋锥口钻
sole cutting edge countersink
单刃锥口钻
machine countersink
机用锥形锪钻
rose countersink
菊花钻
Broughton countersink
布劳顿锥坑钻
multiple-cutting-edge countersink
多刃锥口钻