... 光伏发电 Photovoltaic Power Generation 年日照时数 annual sunshine duration 无霜期 frost-free season ...
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Mean annual sunshine duration 年平均日照时数
·2,447,543篇论文数据，部分数据来源于NoteExpress
The sunshine duration is long, the temperature difference is big, the frost-free period is long, and the annual solar radiation amount is much, which is good for the growth of crops.
日照时间长，昼夜温差大，无霜期长，年太阳能辐射量大，对农作物生长十分有利。
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