topsoil是什么意思

网络释义

用法例句

Seeking relationship between vegetation and Picea pollen in surface soils of Xinjiang, northwestern China;

新疆表土中云杉花粉与植被的关系

Magnetic characteristics of surface soil and its significance in Xinjiang,China

新疆表土磁学性质及其环境意义

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。

Topsoil Granule Composition under Different Green Spaces in Guangzhou

广州市不同绿地类型表土颗粒组成特征

This crusher combining with excavator and belt conveyor may form a new technlogical system of surface mine topsoil stripping.

它具有对大粘土块进行破碎及实现物料流均匀的作用，与单斗挖掘机和胶带输送机可以组成新式露天矿表土剥离半连续开采工艺系统。

The magnetic characteristics of the topsoil in this area were studied using environmental magnetism methods.

采用环境磁学研究方法研究了昆明市松华坝水源区表土的磁学特征,结果表明,松华坝上游地区表土未受或很少受到污染,土壤磁化率偏低,土壤中的主要载磁矿物为磁铁矿、磁赤铁矿,另外还含有少量弱磁性的磁黄铁矿和针铁矿。

The upper part of the soil.

表土土地、土壤表面的一层

sheet erosion (sheet wash)

片蚀, 表土侵蚀, 片状侵蚀

To remove the surface layer of soil from(land.

去掉表土将土壤最上面的一层从（土地上）清除掉

The results showed that the REEs contents in the C horizon the soils were the highest,but Ce was relatively concentrated in A horizon.

结果表明 ,土壤剖面层的底土层含量最高 ,但表土层铈相对富集 .

Magnetic Properties of Dust and Topsoil in Beijing, and Their Environmental Implications;

北京市区尘土与表土磁性差异及其环境学意义

The Development of Soil Surface Crust and the Relationship between Soil Crust Development and Rainfall Splash Erosion;

表土结皮形成过程特征以及与土壤溅蚀的关系

Study on the CaCO_3 Content Characteristics in Conterminous Region of Beijing,Tianjin and Hebei

京津冀接壤区土壤表土层中碳酸钙的分布规律

These soils are well developed and contain a subsurface horizon in which clays have accumulated.

发育良好，土表下有一层粘土淀积土层。

dirt that had become ground into the surface

落在物体表面的尘土

waterproofing of concrete surface

混凝土表面防水工程

schedule of uses and areas

土地用途及面积一览表

This topsoil tends to wash away.

表层土壤要冲掉了。

treatment of concrete surface defect

混凝土表层破坏处理

Heavy rains washed the topsoil away.

大雨把表层土冲蚀掉了

The surface of the soil particle will have a negative charge.

土粒表面会有负电荷。

To spade or plow(soil)to bring the undersoil to the surface.

翻耕，翻土翻（土）或犁（土），从而把下面的泥土翻到表面上来

"The smaller the soil particles, the greater is the surface area of the soil; the water holding capacity, the power of holding plant food and the tenacity of the soil depend on this surface area. "

土粒愈小，则土壤的表面积愈大。土壤的持水力、保肥力和土壤韧度都决定于这一表面积的大

The Structure Status and Effect of Topsoil in Loess Plateau;

黄土地区表层土壤结构状况与效应研究