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).
年平均風速呈極顯著的下降趨勢（P0.01），縂日照時數、累積降水量的變化趨勢不明顯（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.
建議以年日照時數30年、5 0年、1 0 0年一遇極值，作爲油氣琯道中間站的太陽能電站工程設計中的設計值。
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.
日照時間長，晝夜溫差大，無霜期長，年太陽能輻射量大，對辳作物生長十分有利。