countersink

vt. 钻孔装埋, 打埋头孔于 n. 埋头孔, 锥口钻

发音

US

词形变化

countersinks 复数 countersinks countersank countersinking countersinks 三单 countersunk countersinking 现在分词 countersank 过去式 countersunk 过去式 countersunk 过去分词

释义与例句

n.
  1. 1.

    A conical recess, typically machined at the mouth of a hole to admit a screw (with a matching taper) so that the screw sits flush with a surface.

  2. 2.

    The cutter used to cut such a recess. (Also used, at less depth, for edge-breaking/deburring.)

    Holonym: center drill (combined drill and countersink)

v.
  1. 1.

    To create such a conical recess.

    及物

    to countersink a hole for a screw

  2. 2.

    To cause to sink even with or below the surface.

    及物/不及物

    to countersink a screw or bolt into woodwork

词汇关系

名词

同义词 1

counterbore

上位词 2

bit hole
动词

同义词 1

set

上位词 2

bury sink

词源

From counter- + sink.

来源：wiktionary