列表仅仅提供了一个粗略的依据，来判定一些额外物品的价格或者影响力。

These lists are intended merely to provide a rough metric that can be used to determine the price or effect of additional items.

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用此法可计算出列表曲线和函数曲线加工时所需的数据，也可作数学和力学分析，形状误差判定。

This methods can get data that machining of the list-curve and function-curve need, and do analyse of math and dynamo and judging of error.

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