countersink

['kauntə.siŋk]

v. 张扪孔口, 钻孔装埋, 打埋头孔
n. 皿锥, 埋头孔, 暗钉眼

词形变化

动词过去式: countersunk | 动词过去分词: countersunk | 动词现在分词: countersinking | 动词第三人称单数: countersinks |

英英释义

名词 countersink:

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

a bit for enlarging the upper part of a hole

同义词：counterbore, countersink bit

动词 countersink:

insert (a nail or screw below the surface, as into a countersink)

同义词：set

补充