The soil and water loss violently, the main reason was human's destroy on natural vegetation, thus it thoroughly destroyed the permeability and anti-scouring of soil.
目前黄土高原水土流失剧烈进行，其主要原因就是人为活动对天然植被的无情破坏，从根本上破坏了土壤的入渗和抗冲性能。
The anti-scouring feature of forest land soil was examined by using the undisturbed soil sample washing experiment and the spot washing experiment.
径流和土壤是引起水土流失的两个基本因子，采用原状土冲刷法和实地放水冲刷法对北京市八达岭林场油松林地进行土壤抗冲性研究。
The most common difficulties during the construction of deep-water foundations for bridges are water-proofing, soil-proofing, anti-scouring and landslide etc.
桥梁深水基础的修建，主要困难在于防水、防土，甚至防冲刷、防滑坡等。
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