河谷地貌：河谷形态及河谷内各种地貌类型的总称。
该段河谷地貌的形成演化受构造运动和气候等影响。
The geomorphology of river valleys in Gyaca sector has been controlled by tectonic movement and climate.
该段河谷地貌的形成演化受构造运动和气候等影响。
The geomorphology of river valleys in the Gyaca region has controlled by tectonic movement and climate.
三十年来我国河流地貌的研究主要为河谷地貌、河床演变和河口三角洲。
Research in fluvial geomorphology in China during the past 30 years was mainly along the lines of valley geomorphology, channel geomorphology, estuaries and deltas.
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