The monthly mean temperature at 137 stations in China in present century are classified into five grades 1-5. Maps of grade distribution have been prepared for every month and year.
将本世纪以来我国137个站每个站逐月的月平均气温划分为五个等级,绘制了全国范围的历年逐月温度等级分布图。
In the 1990s, the flood water level was lower than before at most stations in the river network of the Pearl river delta under the same grade of runoff.
90年代以来,珠江三角洲网河区大部分水位站同级流量的洪水位普遍下降的同时,局部河段洪水位却异常壅高。
In the 1990s, the flood water level was lower than before at most stations in the river network of the Pearl river delta under the same grade of runoff.
90年代以来,珠江三角洲网河区大部分水位站同级流量的洪水位普遍下降的同时,局部河段洪水位却异常壅高。
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