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单词 θ212278
释义
society > occupation and work > equipment > piercing or boring tools > [noun] > tools for enlarging holes > countersink (3)
countersink1815

A tool for countersinking: see the verb.

countersinker1881

(a) a tool for countersinking; = countersink, n. 1; (b) one who operates a countersinking machine.

counterbore1939

= countersink, n. 1 2.

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更新时间:2025/1/24 8:24:20