The sample is from the surface soil that scientists say covers a layer of ice.
科学家称上面覆盖一层冰的土壤样品是来自火星表层。
Total phosphorus of surface soil had a significantly positive relation with PSD.
土壤全磷与PSD(土壤磷饱和度)有很好的正相关性。
Formation and conversion of soil dew is close relation with evaporation of surface soil.
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。
Leaf area index and surface soil moisture are two basic factors of controlling evaporation.
叶面积指数和表层土壤含水量是控制蒸发的两个基本因素。
Leaching tests were carried out with different simulating acid rain on the surface soil of Burozem.
用不同酸度的模拟酸雨对棕壤进行室内的淋洗试验。
By the further test, shallow rotary tillage or shallow harrow of the surface soil, can solve all the problems.
通过进一步试验，增加浅旋或浅耙表土作业，可解决问题。
The average amount of water reported, if we were to extract it, is about a quart of water per ton (of surface soil).
如果要提取水，每吨(表层土壤)含水量大约为一夸脱。
Soil evaporations are mainly affected by surface soil moisture. Evapotranspiration change from the development process.
土壤蒸发主要受表层土壤含水量的影响，蒸发蒸腾随作物发育进程发生剧烈的变化。
The demand of bearing capacity on the surface soil and soft foundation should be met for the static pressure fabricated pile.
论述静压预制桩压桩力对地表土层和下卧软土层承载能力的要求。
The contents of soil organic carbon, active carbon, slow carbon and resistant carbon is more in the surface soil than subsoil.
表层土壤的总有机碳、活性碳、缓效性碳和惰效性碳含量都明显大于下层。
Total nitrogen contents of surface soil in three forest types changed with seasons distinctly, and overall extents were not big.
三个林型表层土壤全氮含量季节变化规律明显不同，总体变化幅度都不大。
Through the long-term monitoring of deformation of the deep soil and surface soil, a great number of primitive data were obtained.
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；
The surface soil water content was close with different mineralization degree levels water, which approached saturated water content.
不同矿化度的水入渗后，土壤表层含水率基本相近，接近饱和含水率。
The wind erosion hazard is often intensified by the poor vegetation cover and loosen surface soil due to the freezing and thawing over winter.
春季风大风多，降雨量少，气候侵蚀力高，地表植被覆盖率低，土壤表层由于冻融作用变的松散，是一年最易风蚀的季节。
Based on detailed investigation and monitoring, the Hg-element content in the surface soil in Taiyuan, Shanxi Province is analyzed and assessed.
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。
Among the 118 surface soil samples, 42(corresponding to 35.6%) were above the national standards when evaluated with single factor index method.
结果表明，以单因子污染指数评价，在118个表层土壤样品中，有42个样品的重金属含量超标，超标率为35.6%。
Surface soil pollen under various tropical vegetations in Hainan is investigated and these pollen data are used to do simulation of vegetation types.
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。
There were two typical characters in the soil surface of H1 and H2, which were breaking up of aggregates easily and sharply tightening of surface soil.
在降雨过程中，H1、H2表土结构的变化有两个显著特征，一是团聚体容易破碎，二是表土迅速紧实。
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.
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。
Surface soil samples were collected in the deserts and Gobi regions of China. The carbonate content and carbon and oxygen isotopic composition were analyzed.
在中国的主要沙漠和戈壁等粉尘源区采集了地表沙或土壤（统称为表土）样品，分析了样品的碳酸盐含量和碳酸盐的碳氧同位素组成。
It is difficult to control the hole and the slope during frozen drill in profundity surface soil, this text bring forward some experience of management and construction.
针对深厚表土层中冻结钻孔存在的钻孔深、偏斜率难控制等施工存在的问题，提出了一些施工与管理的经验。
Xuehu coal main and subsidiary well have deep shaft, thick surface soil and strong disability, poor pourability in the hydrated grope rock and complex geology condition.
薛湖煤矿主、副井井筒井深、表土厚且膨胀性强、基岩含水层可注性差、地质条件复杂。
By adopting heat equilibrium method, the paper studies the function of the two kinds of shelterbelts to decrease evaporation and saltness of surface soil in the farmland.
用热平衡法研究两种杨树防护林减少土壤蒸发及田间表层土壤减盐作用。
Up to now grouting parameters for the porous surrounding rocks, depended on the penetrating coefficient for shallow surface soil, is unfit for the deep surface soil grouting.
目前孔隙性围岩注浆参数大多是根据浅表土的渗透系数确定的，这不适合深层土注浆。
The purpose of this paper is to find the distribution laws of the shear force between vertical shaft and surface soil, and to lay a foundation for mechanical model of shaft in soil.
揭示矿山立井井筒与周围表土之间剪切力的分布规律，为正确的立井井筒力学模型建立奠定理论基础。
Soil is an important medium in which various organic pollutants can exist, while photodegradation is an effective abiotic transformation means for organic pollutants in surface soil.
土壤是承载有机污染物的重要介质，而光降解是降解土壤表层有机污染物的一种非常重要的非生物转化途径。
It is indicated that, compared with that of subsequent human activities, the influence of natural progress on the distribution of arsenic in surface soil of Chengdu basin is dominant.
相对于后期人类作用而言，自然作用对成都盆地土壤中砷分布特征的影响占主导地位。
Normally, the extracting soil areas firstly need to temporally store the surface soil, meanwhile, temporary block measures, temporary drainage projects and temporary cover should be taken.
粘土料场首先进行表土的临时堆存，同时布设临时堆土区临时拦挡、临时排水和临时覆盖等措施。
Relationships between pollen flora and modern vegetation have been discussed based on surface soil pollen investigation along the Yulong Snow Mountain—Hutiaoxia Gorge—Diancangshan Mountain.
在对玉龙山—虎跳峡—点苍山一带表土孢粉调查的基础上，对区内植被与孢粉散布的关系进行了探讨。
Relationships between pollen flora and modern vegetation have been discussed based on surface soil pollen investigation along the Yulong Snow Mountain—Hutiaoxia Gorge—Diancangshan Mountain.
在对玉龙山—虎跳峡—点苍山一带表土孢粉调查的基础上，对区内植被与孢粉散布的关系进行了探讨。
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