砒砂岩区是黄河中游集中的基岩产沙区，强烈的岩土侵蚀与砒砂岩的岩性密切相关。
The soft rock area is a major sediments-producing area resulting from bedrock erosion in the middle valley of the Yellow River.
黄河中游河龙段岩土侵蚀环境地质问题极为实出 ，岩土侵蚀的地质背景主要有地质构造、地形地貌、地层岩性等方面。
The geological environmental problems concerning to rock soil corrosion at the Helong portion of the middle reach of the Yellow River have become more seriousl than before.
黄河中游河龙段岩土侵蚀环境地质问题极为实出 ，岩土侵蚀的地质背景主要有地质构造、地形地貌、地层岩性等方面。
The geological environmental problems concerning to rock soil corrosion at the Helong portion of the middle reach of the Yellow River have become more seriousl than before.
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