With the increase of soil depth, daily variation amplitude of soil temperature decreases.
随着土壤深度的增加，地温日变幅逐渐减小。
The results show that the air and wall temperature rises instantly with high amplitude of temperature variation, when the train moves through the tunnel.
测量结果显示：当隧道内有列车通过时，气温和壁面温度都瞬间升高，气温变化幅度较大。
Different ways of stabilizing the outside temperature were employed. A slow periodic annual variation of its readings was observed with amplitude of about 500 microgals.
使用不同恒温条件，发现以一年为周期的缓慢变化，幅度可达500微伽。
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