countersink中文什么意思

vt.
(-sunk ) 打孔装埋(螺钉头)，打埋头孔。n.
埋头钻；埋头孔，暗钉眼。

• angle of countersink:    锥孔角
• brace countersink:    钝角菊花形尖头板钻
• broughton countersink:    布劳顿锥坑钻

例句与用法

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1. " countersunk head nib bolts " ploughshare " type
   商业性通用螺栓制造.埋头尖螺栓
2. Countersunk head rivets ; nominal diameters 10 to 36 mm
   沉头铆钉.公称直径10至36mm
3. Detachable pilots for counterbores and countersinks
   扩孔钻和沉头钻用可拆卸导杆
4. Countersunk head screws - head configuration and gauging
   埋头螺钉.头部外形和测量
5. Slotted raised countersunk head screws with waisted shank
   开槽半沉头不脱出螺钉

英文释义

名词

1. a bit for enlarging the upper part of a hole
   同义词：counterbore, countersink bit
2. 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

动词

1. insert (a nail or screw below the surface, as into a countersink)
   同义词：set

百科释义

A countersink is a conical hole cut into a manufactured object, or the cutter used to cut such a hole. A common usage is to allow the head of a countersunk bolt or screw, when placed in the hole, to sit flush with or below the surface of the surrounding material.