The transmission of the earth wave is stable, hardly influenced by climate and its channel parameter does not change with time basically, it is Constant Parameter Channel.
地波传播受天气的影响较小，比较稳定，信道参数基本上不随时间的变化而变化，是恒参信道。
Intelligent defrost, set defrost parameter according to different regional climate condition, defrosts thoroughly.
智能除霜，可根据不同地区气候条件设定除霜参数，除霜更彻底。
Based on a simple HVAC climate model, considered the effect of latitude, distributing of land and water, terrain and discrepancy on town and village, ascertained the parameter.
本文在一简化气象模型的基础上，综合考虑了纬度、水陆分布、地形以及城乡差异等多种因素的影响，并对参数加以确定。
Based on a simple HVAC climate model, considered the effect of latitude, distributing of land and water, terrain and discrepancy on town and village, ascertained the parameter.
本文在一简化气象模型的基础上，综合考虑了纬度、水陆分布、地形以及城乡差异等多种因素的影响，并对参数加以确定。
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