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d regions中文

發音:   用"d regions"造句
  • D region
  • 【物理學】D 區(離地球表面約60~90公里處的電離層的最低部分)[亦稱作D layer]
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例句與用法

  1. the space-time distribution of chinese semi-ari d region surface water is n't even, the differences in a year are obvious; the differences of underground water between years are not so obvious as surface water, but it still has a decreasing tendency, especially in shanxi and sha'anxi provinces . there is a significant linear correlation between the precipitation and water resources in semi-arid region, the dynamic regularity of water resources is basically same as the dynamic regularity of precipitation
    半干旱地區地表水資源時空分布不均勻,年內分配差別大,地下水資源年際間變化率不大,但總體有減少的趨勢,尤以陜西和山西突出。半干旱地區降水量與水資源量線性相關顯著,降水量的變化規律基本上與水資源量的變化規律吻合。

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