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河南读者李冬和来信反映,希望介绍加工抛物线型面零件的资料抛物线型面是一种非圆曲线的特殊型面.抛物线型面零件因其形状特珠制造困难,限制了其广泛的应
Henan readers Li Donghe letter reflects the hope to introduce the processing of parabolic profile parts Parabolic profile is a non-circular curve of the special profile Parabolic profile parts because of its special beads manufacturing difficulties, limiting its wide range of applications