The open system is not suitable for adoption in solar photovoltaic engineering because of its inefficiency through analyzing the national sunshine duration table.

通过分析全国日照时数表得出：开环系统在太阳能光伏工程中效率不高而并不适合采用。

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Evaporation from Erhai Lake decreases with the increase of total cloud cover and relative humidity, and it increases with the increase of mean wind speed and sunshine duration.

洱海水面蒸发随着总云量和相对湿度的增加而减小，随着平均风速和日照时数的增大而增大。

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The degree of rice grain chalkiness increased with increasing mean temperature and sunshine duration from the south to the north during the grain ripening stage.

就中，米粒白垩质之等级的试区变异方向与三试区稻谷粒充实发育期间外界之气温和累积日照时数之试区变化方向一致，呈由南而北依次遁增。

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The island also had its lowest recording of sunshine duration since 2003 with 137.3 hours.

BBC: Weather station data shed light on wet July

The seaside town of Nairn, known as the Brighton of the North, had 140.7 sunshine duration hours - the lowest recording since 2007.

BBC: Weather station data shed light on wet July