This paper lead to the principle of choose of cut ting speed for ladder machine parts by explaining the relation of cutting speed for ladder machine parts and cost.
通过分析阶梯形零件切削速度与加工成本的关系，从而推导出阶梯形零件切削速度的选择原则。
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Contains a defoamer to improve opera ting efficiency of the dish machine. pplications: all types of ware and utensils.