Two thermal environments, one with and the other without thermal gradients, were designed to study diel variation in body temperature (Tb) .

设计具有和缺乏温度梯度两种热环境，研究幼龟体温昼夜变化和体温调节。

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The research results show that the size distribution, diel change, daily variation have a good connection with relative humidity and Richardson number.

研究结果表明，气溶胶浓度和谱分布存在明显的日变化和逐日变化，并在很大程度上受空气相对湿度和里查森数影响。

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