countersink

来源：学生作业帮助网 编辑：作业帮 时间：2024/05/03 15:09:04

countersink

countersink dot
暗钉眼孔
Drill and countersink the holes to keep wood from splitting.\x09
钻和锪孔,以保持木材的从分裂.

埋头孔点。。。

countersink 英语翻译countersink all tapped holes approx 90度 included angle to a dia 0.3 to 1.0 greater than major dia of thread.