[ 复数 counterbores 第三人称单数 counterbores 现在分词 counterboring 过去式 counterbored 过去分词 counterbored ]
counterbore drill [机] 平底扩孔钻
CBORE Counterbore 扩孔 ; 埋头孔
radial adjustable counterbore 径向可调平底镗钻
counterbore depth 沉头孔深度
counterbore surface 沉头孔表面
counterbore guide 扩孔钻导柱
tube counterbore 管沉头孔
liner counterbore 缸套镗孔
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