1) boring tool
挖削刀具
1.
By careful design, the two boring tools have functions of automatic feed and withdrawal in diametrical direction, of being adjustable of axial position, and are convenient in operation, simple in structure, reliable in working performance and high in efficiency.
介绍了斜楔式和偏心式两种内孔环形槽挖削刀具的结构设计和工作原理。
2) undercutting
挖削机
补充资料：挖云
1.镂穿成云头形的边饰。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。