1·The number of thunderstorm day and the fog day was increased but the sunshine duration was decreased.
另外，呼和浩特市雷暴日数、雾日数增加了，而日照时数在减少。
2·The trends of air temperature, precipitation and sunshine duration changes exhibited spatial variations over the research regions.
研究区气温、降水量、日照时数的变化趋势在空间分布上存在着一定的区域差异。
3·Cloudy conditions prevailed for most of April. The total bright sunshine duration was only 73.6 hours, the tenth-lowest April record.
四月大部分时间多云，总日照量只有73.6小时，是四月份的第十最低纪录。
4·The seasonal difference in sunshine duration was evident, and decreasing amplitude in season was winter, summer, autumn and spring in turn.
日照时数季节差异较为明显，趋势明显程度依次为冬季>夏季>秋季>春季；
5·The temporal distribution characteristics of sunshine duration and its spatial variation with different altitude, slope and aspect were analyzed.
并分析了山区实照时数的时间分布特征和不同海拔高度、坡度和坡向上年实照时数的空间分布特征。
6·The changing environment around the meteorological observing station and human activities also influenced the change of temperature and sunshine duration.
气象观测场周边环境的改变和人类活动对增温趋势和日照时数的减少有一定的影响。
7·The meteorological yield of maize in Liaoning Province was mainly affected by precipitation and sunshine duration, and different regions had different effects.
辽宁省玉米气候产量主要受降水和日照时数的影响，不同地区影响效果不同。
8·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。
9·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。
10·The main research achievements are as follows:There was a decreasing trend of the sunshine duration and sunshine percentage of year and growing season from 1951 to 2008.
主要研究结论如下：（1）1951-2008年，年和生长季的日照时数及日照百分率均呈减少趋势。