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我刊在6卷3期曾发表了“怎样鑽四方形孔及多角形孔”一文,对鑽孔所用的工具作了一般介绍,但对这些工具的制造过程没有具体叙述,现在发表的这篇译文,可补该文之不足。
In the 6th issue of the 3rd issue of our magazine, we published the article “How to Drill Square Holes and Polygonal Holes.” A general description of the tools used for drilling was given, but there was no specific description of the manufacturing process of these tools. Translation can supplement the deficiencies of the article.