瀑布的形成为什么长江水在虎跳峡峡谷内,江流连续下跌7个陡坎,形成累积落差达170米的瀑布,而流经长江三峡没有出现瀑布景观?
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![瀑布的形成为什么长江水在虎跳峡峡谷内,江流连续下跌7个陡坎,形成累积落差达170米的瀑布,而流经长江三峡没有出现瀑布景观?](/uploads/image/z/13023387-27-7.jpg?t=%E7%80%91%E5%B8%83%E7%9A%84%E5%BD%A2%E6%88%90%E4%B8%BA%E4%BB%80%E4%B9%88%E9%95%BF%E6%B1%9F%E6%B0%B4%E5%9C%A8%E8%99%8E%E8%B7%B3%E5%B3%A1%E5%B3%A1%E8%B0%B7%E5%86%85%2C%E6%B1%9F%E6%B5%81%E8%BF%9E%E7%BB%AD%E4%B8%8B%E8%B7%8C7%E4%B8%AA%E9%99%A1%E5%9D%8E%2C%E5%BD%A2%E6%88%90%E7%B4%AF%E7%A7%AF%E8%90%BD%E5%B7%AE%E8%BE%BE170%E7%B1%B3%E7%9A%84%E7%80%91%E5%B8%83%2C%E8%80%8C%E6%B5%81%E7%BB%8F%E9%95%BF%E6%B1%9F%E4%B8%89%E5%B3%A1%E6%B2%A1%E6%9C%89%E5%87%BA%E7%8E%B0%E7%80%91%E5%B8%83%E6%99%AF%E8%A7%82%3F)
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