By the perturbation method, the formula of the critical temperature difference may be found and the error of which may also be estimated.

采用摄动理论，本文导出了路面板临界铺设温差的渐近表达式并给出了误差分析。

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In this paper the nonlinear stable temperature field problem, in which the conductivity is a linear function of temperature, has been solved by using the perturbation technique.

本文用摄动方法求解热传导系数是温度的线性函数的非线定常温度场问题。

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The temperature sensitivity of the frequency as a function of quartz crystal anisotropy is presented by the perturbation equation due to the temperature change.

利用波扰动方程，分析研究了声表面波器件频率-温度敏感性与石英晶体各向异性参数之间的关系。

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