a• 河段谷中谷现象明显,河谷上部谷坡较缓,下部陡峻,河谷上有另星的谷肩平台分布。谷坡不稳定,崩塌、滑坡和泥石流频繁发生。 • The section of river valley in valley phenomenon is obvious, on river valley Gu Pojiao slow, lower part high and precipitous, on the river valley has another star ...