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我國南北跨緯度大,由於緯度的影響,南北氣溫呈現出一定的差异.冬季我國南北氣溫差別很大,1月0℃等溫線大致沿秦嶺-淮河一線分佈,在這條線以南,1月平均氣溫在0℃以上,在這條線以北,1月平均氣溫在0℃以下.漠河鎮與海口市…
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