最糟糕的是土壤物理结构的变化，如果表层土壤侵蚀，土壤更难保水保肥。
Worst of all, the physical structure changes if the top soil erodes, making it harder for the land to retain water or fertiliser.
土壤侵蚀定量模型经历了经验统计模型、物理模型和分布式模型等三个阶段。
Soil erosion quantitative model has experienced three phases, which is experienced statistical model, physical model and distributed model.
本文分析研究了贵州乌江流域喀斯特土壤在不同植被类型和不同侵蚀程度条件下的土壤主要物理性质。
Based on the analysis and study on the physical properties of karst soil in Guizhou Wujiang river basin in different type of vegetation and different degree of erosion.
土壤侵蚀、化学退化、物理退化是全球范围内最主要的退化形式。
Globally, soil erosion, chemical deterioration and physical degradation are the important forms amongst various types of soil degradation.
动态土壤侵蚀包括依赖于空间与时间的土壤剥离、细沟的形成、水流中过量泥沙的沉积、沉积泥沙中细沟的再生等物理过程。
Dynamic soil erosion processes involve the spatial and time dependent processes of detachment, rill formation, deposition, re rilling from deposited sediment and scouring of rills.
结果表明，土壤侵蚀造成表层耕作土壤的物理性能下降、养分流失和水分入渗能力降低。
The results show that the soil erosion on slope not only bring about soil nutrients lost, but also cause the soil physical property damaged, soil infiltration capability weakened.
产品具有优良的高温物理性能和抗化学侵蚀性能，广泛用于中小高炉炉衬的各个部位。
These products could be used for every part of small-middle hot blast stove dur to their excellent physical and chemical properties.
产品具有优良的高温物理性能和抗化学侵蚀性能，广泛应用于中小高炉炉衬的各个部位。
Product has excellent high temperature physical properties and resistance to chemical attack, widely used in various parts of small blast furnace lining.
降雨侵蚀力(R)是引起土壤侵蚀的潜在能力，是降雨物理特征的函数。
Erosivity of rainfall (r) is the potential ability which cause soil erosion and is the function of the physics characteristic of rainfall.
二是通过改善土壤的物理性质，提高土壤自身的水力学性质，从而增强土体的抗侵蚀能力。
The other is that roots can improve soil physical properties. The both ways can strengthen soil Hydraulic properties, and im-prove the capability of soil anti-erosion.
二是通过改善土壤的物理性质，提高土壤自身的水力学性质，从而增强土体的抗侵蚀能力。
The other is that roots can improve soil physical properties. The both ways can strengthen soil Hydraulic properties, and im-prove the capability of soil anti-erosion.
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