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搬運作用 | Presentation by changyuwei1217

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changyuwei1217
搬運作用張育威17黃威誠20搬運作用是指:風力或是水力在移動的過程中,帶走地表上的砂石...等等水的搬運作用 例:河流 石頭被水從上游帶到中、下游過程中,石頭會受到撞擊和滾動而導致磨損、碎裂,體積逐漸縮小、圓滑,到了中游處如圖一(鵝卵石) 到了下游處如圖二(小砂石、泥沙)。特徵圖一圖二特徵的形成原因
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