[ 第三人称单数 countersinks 现在分词 countersinking 过去式 countersunk或countersank 过去分词 countersunk或countersank ]
countersink drill [机] 埋头钻 ; 埋头坫 ; 静心钻 ; 中心钻
countersink head bolt 埋头螺栓 ; 静心螺栓 ; 埋头
machine countersink drill 机械埋头钻嘴
countersink bit 埋头钻嘴 ; 装定位 ; 静心钻嘴
countersink head screw 埋头螺丝 ; 静心螺丝
rose countersink drill 埋头钻嘴 ; 静心钻嘴
Flat countersink square neck bolts 沉头方颈螺栓 ; 沉头方颈
CSK Countersink 埋头孔 ; 埋头 ; 埋头的
V to enlarge the upper part of (a hole) in timber, metal, etc, so that the head of a bolt or screw can be sunk below the surface 把(木材、金属上的孔)扩大
N a tool for countersinking 用于锪削的工具 (Also called countersink bit)
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