counterbore (drill)

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counterbore (drill) 基本解释

[化] 平底扩孔钻

词组短语

1、counterbore drill 平底扩孔钻

重点词汇

counterbore (用平底扩孔钻)扩孔[锪孔, 镗孔, 镗阶梯孔], 沉孔, 埋头孔


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更新时间:2026-11-01 06:55:33
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