CSK Countersink埋头孔;埋头;埋头的
taper countersink锥面锪钻
rose countersink菊花钻
machine countersink机用锥形锪钻
Countersink Bits锪钻
splint countersink钝角菊花形尖头板钻
countersink learn埋头钻
live countersink钝角菊花形尖头板钻
countersink drill[机] 埋头钻;埋头坫;静心钻;中心钻
V（动词） to enlarge the upper part of (a hole) in timber, metal, etc, so that the head of a bolt or screw can be sunk below the surface 把(木材、金属上的孔)扩大
N（名词） a tool for countersinking 用于锪削的工具 (Also called countersink bit)