通过理论分析和试验结果，讨论了一种新颖的测定渗碳层深度的方法——电阻法。

A new method, named resistance method, for determining the depth of carburized layer is presented by means of theoretical analysis and test results.

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本文建立了多段法渗碳的数学模型，并讨论其物理意义。

In this article, the mathematics model of multi stage carburizing is obtained and its physical meaning is discussed.

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多段法渗碳的数学模型是线性偏微分方程。线性偏微分方程的一个重要性质是可迭加性。

The mathematical model of multi stage carburizing is a linear partial differential equation, and superposability is an important property of the linear partial differential equation.

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