countersinking fixture 钻埋头孔夹具 ; 同心度检查装置
countersinking bit [机] 平头钻头
countersinking of the rivet holes 钻铆钉孔锥口
countersinking bit in three pieces 三件埋头钻
countersinking drill press 尖底扩孔钻床
Drilling and countersinking machine 顶尖孔钻床
Aircraft Assembling TechnologyDimpling and Countersinking 飞机装配工艺
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)
These may be slicing off thin shavings, countersinking, counterboring, or other operations.
这些可能是切片薄刨花，沉孔，扩孔，或其他操作。
Rotating machining tools ( cutting ), round rods, circular knives circular saws, countersinking tools, turning tips, guide gibs, knive blades.
可转位加工工具（切削） 、圆棒、环刀、圆盘形锯、钻孔工具、车刀、导向槽、刀片。
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