翻訳と辞書
Words near each other
・ counterponderate
・ counterprove
・ counterrevolutionary
・ counterrolment
・ counterscale
・ counterscarf
・ counterseal
・ countersecure
・ countershaft
・ countersign
countersink
・ counterstand
・ counterstep
・ counterstock
・ counterstroke
・ countersunk
・ countersway
・ counterterm
・ countertime
・ countertrippant


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countersink : 英英辞書
Coun"tersink°
(koun"trsk°; 277), v. t.[imp. & p. p.Countersunk (-sk°); p. pr. & vb. n.Countersinking.]
1. To chamfer or form a depression around the top of (a hole in wood, metal, etc.) for the reception of the head of a screw or bolt below the surface, either wholly or in part; as, to countersink a hole for a screw.
2. To cause to sink even with or below the surface; as, to countersink a screw or bolt into woodwork.

Coun"tersink°
n.
1. An enlargement of the upper part of a hole, forming a cavity or depression for receiving the head of a screw or bolt.
In the United States a flaring cavity formed by chamfering the edges of a round hole is called a countersink, while a cylindrical flat-bottomed enlargement of the mouth of the hole is usually called a conterbore.
2. A drill or cutting tool for countersinking holes.



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