长期变化

• The dynamic comparative advantage theory is mainly about the long - term change tendency of the comparative advantage and the decisive factors which cause the change of the comparative advantage
  动态比较优势理论主要研究比较优势的长期变化趋势以及比较优势变化的决定因素。
• Standard test method for estimating the long - term change in the thermal resistance of unfaced rigid closed cell plastic foams by slicing and scaling under controlled laboratory conditions
  受控实验室条件下用限幅和定标法评定无面刚性闭室塑料泡沫的热阻抗长期变化的标准试验方法
• Data provided by the network will facilitate the monitoring of the long - term changes of air quality in the region and help to understand the effects of the various control measures on the overall air quality
  区域空气质素监测网络所提供的数据，有助监测区内空气质素的长期变化，了解各项防治措施对整体空气质素的影响。
• The result shows that the flood area has a marked decreasing trend in global land in summer and autumn and winter , while the flood area has a remarkable increasing in north america in spring
  分析了全球陆地及各大尺度区域的洪涝和干旱面积的长期变化趋势。指出从1948 - 2001年，全球陆地夏季、秋季、冬季的洪涝面积减少的趋势非常显著。
• By comparing precipitation proxies of the shennongjia region with the dry / wet records in other regions , the author finds that the long - term change trend of all records is approximately consistent
  与其它地区干湿记录对比显示，长期变化趋势具有较好的对比性。 1100aad前各记录都显示高降水特征，变幅较大， 1100aad后相对较低，振幅小。
• The analysis of the probability of maximum temperature in south china during the summer of 2003 revealed that this event can ' t be considered as a reflection of long time trends , but rather than an episode under interannual variability
  分析最高气温的概率分布特征，得出2003年夏季江南、华南地区出现的极端酷热天气，只是年际变化的表现，而不是长期变化趋势的反映。
• In the long - term variation trend of heavy rain days and its intensity , most areas present increase tendency with the exception of the area of liaoning . there are positive correlation between heavy rain days and summer precipitation
  东北地区不同区域大雨日数和大雨强度的长期变化趋势为辽宁地区大雨日数和强度变化趋势是减少趋势，东北中部大雨日数呈减少趋势，强度呈增加趋势。
• The precipitation is relatively more and the long - term variable trend is decreasing in the first stage of rainy season ; however the precipitation is relatively less and the long - term variable trend is increasing in the second stage of rainy season in fujian province
  结果表明： ( 1 )福建省前汛期降水量较大，其长期变化趋势是减少的；后汛期降水量较少，其长期变化趋势是逐渐增加的。