The open system is not suitable for adoption in solar photovoltaic engineering because of its inefficiency through analyzing the national sunshineduration 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。
2
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 sunshineduration.
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。
3
The degree of rice grain chalkiness increased with increasing mean temperature and sunshineduration from the south to the north during the grain ripening stage.