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「机械工人」56年12期左学谷同志所报道的「在铣床上铣切大蜗轮的方法」一文,我读过后觉得这方法不错,现在根据我们过去的工作经验,来补
After I read the article “Mechanic” 56:12, “The way to mill big worm gear on a milling machine” reported by Comrade Zuo Gurgu, I think this method is good and now based on our past work experience,