In this article the broaching internal round hole system is simplified to the single-freedom system.

本文首先将内孔拉削系统简化为单自由度系统，给出其振动的数学模型并对其进行运算和处理。

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The topic to keep in mind is' broaching '.

专题要记住是'拉'。

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The topic to keep in mind is' broaching '.

专题要记住是'拉'。

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