countersink meaning in English
vt.
(-sunk ) 打孔装埋(螺钉头)，打埋头孔。
n.
埋头钻；埋头孔，暗钉眼。
Examples
- " countersunk head nib bolts " ploughshare " type
商业性通用螺栓制造.埋头尖螺栓 - Countersunk head rivets ; nominal diameters 10 to 36 mm
沉头铆钉.公称直径10至36mm - Detachable pilots for counterbores and countersinks
扩孔钻和沉头钻用可拆卸导杆 - Countersunk head screws - head configuration and gauging
埋头螺钉.头部外形和测量 - Slotted raised countersunk head screws with waisted shank
开槽半沉头不脱出螺钉