characteristic value of ground temperature
...1．19 起始冻结温度 initial temperature of freezing 1．20 冻土地温特征值 characteristic value of ground temperature 1．21 地温年振幅 annual amplitude of temperature in ground ..
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characteristic value of ground temperature
地温特征值
以上为机器翻译结果，长、整句建议使用 人工翻译 。