1) counter bore
埋头孔
2) countersinking
钻(埋头)孔
3) countersink
钻埋头孔
4) countersunk head
埋头
5) countersink depth
埋头度
1.
In this paper the effect of countersink depth on the seam overlap percent has been analyzed by using the method of the 209 can's simulator seam and ideal parameters with computer,and this paper deals with the tendency of this effect,reference data of this effect of countersink depth on the seam overlap percent and seam guide methods in practice production is suggeste
本文通过对设定理想参数下的２０９罐型在计算机上的模拟卷封，分析了压头埋头度对卷封叠接率的影响，阐述了压头埋头度对卷封叠接率的影响趋势，并提出改变压头埋头度对改变卷封叠接率的参考数据，以及在实际生产中的指导方
6) cased telescoped ammunition
埋头弹
1.
In this paper, the main properties of cased telescoped ammunition gun were introduced.
阐述了埋头弹火炮的主要特点,介绍了国外40多年来的研究情况和埋头弹火炮的发展趋势,对指导未来埋头弹药火炮的研究具有十分重要的意义。
参考词条
补充资料：第二孔(继发孔)型缺损
第二孔(继发孔)型缺损
ostium secondary defect
是心房间隔在形成上发生障碍，一般缺损较大，多在卵圆孔附近称第二孔(继发孔)型缺损。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。