切削件结构设计准则（１）（十一）杨文彬（南京化工大学２１０００９）编者按：杨文彬教授编写的“结构设计准则”自刊登以来，收到不少读者来信，深受欢迎。鉴于杨文彬教授前二年去德国执教，他本人仍十分关心《机械设计》杂志及广大读者，在德国继续撰写“结构设计准... (1) (11)  Yang Wenbin (Nanjing University of Chemical Technology 210009) Editor’s note: Since the publication of “Structural Design Guidelines” written by Professor Yang Wenbin, we have received many letters from readers and are very popular. In view of Professor Yang Wenbin two years ago to Germany to teach, he is still very concerned about the “mechanical design” magazine and readers, in Germany continue to write "structural design standard ...