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.
等离子切割，由于融口上面大，下面小，切口断面总有一定斜度，不可能象火焰切割一样垂直，这是一世界性难题。
Plasma cutting, due to melt, the small mouth above, there is always a downward section incision, don't like probably as vertical flame cutting, this is a worldwide problem.
火焰切割机的价格比较低，同时前期投入成本也较低。
The price of flame cutting machine is lower, and the cost is low.
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