Prick punch
01
中心冲, 精密冲头
a precision hand tool with a sharp, pointed tip that is used to create small, accurate indentations or pilot marks on a workpiece
例子
Before drilling into the metal, he made a small dent with the prick punch to guide the drill bit.
在钻入金属之前,他用中心冲做了一个小凹痕来引导钻头。



























