This tells us that a simple linear function of time is an extremely bad model for outside temperature.
这就告诉我们，对室外温度来说，时间的简单线性函数是一个非常不好的模型。
R provides still more tools for time series analysis. For example, we can plot the autocorrelation function for the living room temperature.
R还具有更多用于时间序列分析的工具。
By analyzing the rule of temperature distribution in seasonal frozen soil area, the function of temperature with time is established.
通过分析季节冻土区的温度分布规律，建立了温度随时间的变化函数。
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