数控火焰切割：数控火焰切割是数控机床利用燃气配氧气或者汽油配氧气进行金属材料切割的一种切割方式。
NC flame cutting: CNC flame cutting is numerical control machine tool use gas with oxygen or gasoline in metal materials with oxygen cut a way to cut.
南希：我稍微知道一点数控，但是我常常对数控机床工具的种类感到困惑。
Nancy: I know nc a little bit, but I often get confused about the kinds of nc machine tools.
本文的研究对象是数控加工技术，包括数控编程技术和数控机床技术。
The research object of this thesis is NC machining technologies including NCP and CNC.
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