它像一台巨大的扫雪机一样冲下陡峭的山坡，卷走了树木、巨石和成吨的表土，将沿途的六个村庄彻底摧毁。
As it crashed down the steep mountainside like a gigantic snowplough, it swept up trees, boulders and tons of topsoil, and completely crushed and destroyed the six villages that lay in its path.
随着植被覆盖面的消失，每次雨季都将更多的宝贵的表土层冲到湖里去。
With the tree cover gone, every rainy season sees more of the precious topsoil washed away into the lake.
薄薄的一层表土被冲走了。
表土花粉可能成为冲积物花粉的一部分。
纳森•林奇：为有效吸取表土磷等营养物，浅根更适合。
Jonathan Lynch: For some nutrients like phosphorous which are in the top soil, we want shallow roots.
1930年代，美国曾受沙尘冲击，风沙带走了肥沃的表土。
In the 1930s, the United States was hit with the Dust Bowl, with winds that carried off the nutritious top soil.
在许多国家里，生产性表土的流失已导致日益严重的粮食短缺。
In many countries the loss of productive topsoil has contributed to growing food deficits.
简要分析了位于巨厚冲积层表土下，竖井破坏的特点及力学机理。
The characteristic and mechanical mechanism of shaft failure under mega-thick alluvial surface layer are briefly analysed.
对行星表土钻头钻进效果和主要钻进参数的关系进行了试验分析。
Laboratory tests and analyses were carried out to investigate the relationship between the main drilling parameters and their drilling effects.
而土壤凝结水的形成与转化又与表土蒸发之间存在着十分密切的关系。
Formation and conversion of soil dew is close relation with evaporation of surface soil.
对尘土、不同深度的表土和沙尘暴样品开展了系统的环境磁学参数测量。
Environmental Magnetic measurements were carried out on all urban dust, topsoil and dust storm samples.
吴哥可能已经遭受过和现代相同的问题，包括滥伐森林，人口过剩，表土退化和侵蚀。
Angkor may have suffered problems common to modern times, including deforestation, overpopulation, topsoil degradation and erosion.
而大家谈论不多的问题说不定是最为重要的，那就是越来越少的优质表土。
One thing that doesn't get talked about much may be the most important thing of all: a growing shortage of quality topsoil.
通过对油罐地基地表土与深层土变形的长期观测，取得了大量的原始数据；
Through the long-term monitoring of deformation of the deep soil and surface soil, a great number of primitive data were obtained.
保护地表土层对于保护草地资源和生态环境，以及沙漠化防治具有极端重要性。
The protection of top soil layer has utter most importance in protection of grassland resources and ecosystem, and in prevention of sandy desertification.
模拟结果表明，细沟扩宽过程对坡度和坡面表土临界起动流速的变化十分敏感。
Simulation result also indicates that the rill width is affected both by slope gradient and critical detachment velocity of surface soil on the hill slope.
如果需要，我们可以培养细菌，直接从表土提取资源——这项技术在地球上也非常实用。
Out of necessity we could develop bacteria to extract resources directly from the regolith - a useful technology for Earth as well.
实践证明，利用井点降水法通过特大含水表土层是一种技术经济可行的科学方法。
Passing through the especially big watery stratum is economic and effective by using the well point method.
通常土方发掘先将有机表土分别挖除，竣工后还可将其用于新修建物周围景观工程。
Excavation generally starts with the separate stripping of the organic topsoil, which is later reused for landscaping around the new structure.
文中在调查监测的基础上，对太原市地表土中汞元素的含量进行了初步分析评价。
Based on detailed investigation and monitoring, the Hg-element content in the surface soil in Taiyuan, Shanxi Province is analyzed and assessed.
研究了采煤塌陷区适农土地表土剥离复垦和混推复垦对复垦后土壤理化性质的影响。
The effects of soil-handling operations for coal mining subsidence on soil physical and chemical properties were investigated in this paper.
一个主要的问题是，退化的土壤变得密实，造成吸水量减少，从而导致水从地表流失并将表土带走。
One major problem is that degraded soils become compacted and so absorb less water, which then tends to run off the surface, taking topsoil with it.
调查分析了海南岛各种热带植被下的表土花粉，并根据花粉数据进行植被类型的模拟。
Surface soil pollen under various tropical vegetations in Hainan is investigated and these pollen data are used to do simulation of vegetation types.
当土壤水吸力增大到一定值时，中间土层的土壤非饱和导水率反而大于底土层和表土层。
While the soil water suctions increased to some values, the unsaturated hydraulic conductivities in middle soil layers were higher than those in topsoil layers.
当土壤水吸力增大到一定值时，中间土层的土壤非饱和导水率反而大于底土层和表土层。
While the soil water suctions increased to some values, the unsaturated hydraulic conductivities in middle soil layers were higher than those in topsoil layers.
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