annual sunshine duration

基本解释

The annual average wind speed reduced significantly(P0.01). The sunshine duration and the annual precipitation changed no significant(P>0.05).
年平均风速呈极显著的下降趋势（P0.01），总日照时数、累积降水量的变化趋势不明显（P>0.05）；
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The extremes of annual sunshine duration once every 30,50 and 100 years were referred to as the designed value in the project of solar energy power station.
建议以年日照时数30年、5 0年、1 0 0年一遇极值，作为油气管道中间站的太阳能电站工程设计中的设计值。
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。