多年平均值 meaning in English
long-time average annual value
normal value of accumlated year
Examples
- The average values of the transition dates in middle stratosphere and their variations with height . the climatic variability and the interannual and interdecadal variation rule of the transition dates
中平流层环流转型日期的多年平均值及其随高度的变化，各层转型日期的气候变率及异常存在年代际、年际变化规律。 - The result shows that annual rainfall in the 15 coming years will increase by about 6 % , annual rainfall fluctuation will increase and rainfall concentration in a year tends to increase , which will make flood and sediment increased
结果表明：未来降水量比多年平均值增加6 %左右，且年际波动性增大，年内分布更加集中，洪水量和输沙量有增大的趋势。 - ( 2 ) the effects of rainfall on the runoff and sediment in the weihe river are studied . it is pointed out that the rainfall is much less than the average . especially during the flood season , which results in the lower runoff yield
( 2 )分析了降雨特点及对渭河流域水量的影响，指出90年代全流域降水量比多年平均值偏少，尤其汛期雨量偏少较多，因而同样降雨条件下，产流量偏少。 - We draw the conclusions as follows from prediction results : the total salinity of groundwater will slightly increase compared with present mean value , when the irrigation water amount is reduced 10 % of present normal water quantity in the 2005
从预测结果看， 2005年在引水量减少10的情况下，试区的地下水矿化度较目前多年平均值略有升高。 2010年，当引水量减少30时，地下水矿化度在不同时期有较大幅度上升，值得引起注意。 - There was no direct correlation between runoff module and erosion module , but there was an obvious consistency between runoff module variation and erosion module variation . the catchments with large runoff module variation also had a large erosion module variation . 5
径流模数和侵蚀模数多年平均值之间没有直接的相关性，而径流模数的变化和侵蚀模数的变化之间有很好的协同性，径流模数变异大的集水区对应的侵蚀模数变异也大。