研究表明,在高湿地区,霜层的形成及霜厚的增加较快,以蒸发温度及空气压降作为除霜控制参数是合理选择化霜周期的重要依据。
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经过统计回归分析,提出设计冻深与冻胀率的计算公式.
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The grocer, who was driving a wagon , got frustrated by the frost and slippery lane.
驾着马车的杂货商因冰冻路滑而沮丧.
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There is no fear Frost summer , spring , summer , autumn and winter seasons Yan.
“寒霜暑热毫无畏, 春夏秋冬四季妍”.
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