The experiment results showed that the daily maximum and daily mean value of soil temperature were decreased, the daily minimum of soil temperature was increased in comparison with control.
实验结果表明，有机物覆盖使土壤的日最高温度和日平均温度降低，但却使土壤的日最低温度得以提高。
The snow cover might affect the daily maximum ground temperature, daily minimum ground temperature and the daily range of the ground temperature.
积雪可能对土壤日最高温、日最低温和日温差有较大影响。
The long-term variation characteristics of annual mean air temperature, annual mean maximum and minimum air temperature and mean daily range from 1932 to 2002 in Lanzhou are analyzed.
分析了兰州1932～ 2 0 0 2年年平均气温、年平均最高和最低气温及年平均气温日较差的气候变化特征。
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