土层

Meanwhile due to long-time volatilization, eluviation and transformation, most of the petrol pollutants were hydrocarbons with macromolecule and high boiling point; and the contents of the efficient nitrogen and phosphorus were very low, which made the bioremediation more difficult and became influence factors adverse to the bioremediation.

同时，长期的挥发、淋失和转化造成土层中石油污染物主要由高分子、高沸点烃类组成，且油污土层的速效氮、速效磷含量太低，直接增加了生物修復的难度，成为不利於生物修復的影响因素。

The similarity analysis with non-metric MDS method reveals that exclosure results in lower similarity among vegetation quadrats, this difference, however, doesn't reflect from soil seedbank, the lag effect between soil seedbank and vegetation should be focused on in further study.

地上植被和土壤种子库间的相似性分析结果则表明相同措施同一土层间种子库中等相似，而不同土层间还是存在着一些差异。由于封育措施导致了植被样方的相似性较低，然而土壤种子库间的相似性仍然较高，两者间是否存在着一定程度的滞后效应有待于进一步研究。

This research was conducted in degraded rangeland at the southwestern edge of the Mu Us sandland, Yanchi county, Ningxia, the soil seedbank features and its relation to vegetation was analyzed using similarity analysis and ordination method, the results show that seeds within soil distribute mainly in 0~5 cm soil layer, less seeds in 6~15 cm soil layer in exclosed and non-exclosed rangeland, for seeds in exclosed soil, species richness and diversity index H are higher, while D is lower, exclosure measure, generally speaking, can increase plant species and amount of vegetation and seeds in soil, some annual plants, mesophytes and halophytes appears in the soil or surface.

以毛乌素沙地西南缘宁夏盐池县的退化草场为研究对象，采用相似性分析和排序方法对封育和未封育草场土壤种子库的特征及其与地上植被间关系进行了研究，结果表明无论封育区还是未封育区，土壤种子库中的种子主要分布于0~5cm的土层，6~15cm土层的种子数很少；封育区土壤种子库的物种丰富度大于未封育区，物种多样性则表现为H 值较大，而D值较小，总体上看封育措施可以提高地上植被和土壤中种子的种类和数量，一些一年生植物、中生植物和盐生植物开始出现在地面或土壤种子库中。

Water seeping from pores of fictile pipe to moist soil and crop root system.

因土层内的陶管侧壁有孔，水由陶管孔渗入土壤保持作物根据系土层长期湿润。

A set of governing dynamic equations with different basic unknowns and with different hypotheses is presented. Thereafter, the 3-D non-axisymmetric governing dynamic equation is solved by means of Fourier expanding and Hankel integral transform method.

在Biot两相介质波动理论的基础上，直接用Fourier展开和Hankel积分变换技术分析三维非轴对称饱和弹性土层和饱和弹性半空间波动方程，首次得到用积分变换形式表示的，三维非轴对称饱和弹性土层和饱和弹性半空间，以饱和土土骨架位移和孔隙水压力为基本未知量的基本解。

L Hardpan - A dense layer of clay that is impenetrable by roots and water.

l 硬质土层-一种密集的使根部和水都不可以穿过的粘土层。

Based on the project instance, construction craft is introduced that shallow layer guide hole technology to improve soft soil foundation under thick hardpan and the refit of main construction equipment. It has succeeded in solving problem of the drain consolidation of silt. The result is good

摘 要：结合工程实例介绍采用浅层引孔技术加固硬土层下软土地基的施工工艺及主要施工设备的改装，成功地解决了穿透较厚硬土层使下卧淤泥层排水固结的技术难题，效果良好，经济实用，有较好的推广价值。

The paper has a further research on the influence of compound soil nailing behavior in the perspective and the axial strength of the soil nails of the effect of the stiffness of soil, the stiffness of soil-cement mixing piles, the width of soil-cement mixing piles, the length of nails, the angle of nails. The paper also has a research on the influence of compound soil nailing behavior in the perspective of silt and hardpan of the effect of the width of soil-cement mixing piles.

深入分析了土体的弹性模量，水泥搅拌桩的弹性模量，水泥搅拌桩挡墙的宽度，土钉长度的变化以及土钉倾角的变化对复合型土钉墙变形性状和土钉轴力的影响，以及水泥搅拌桩挡墙的宽度在淤泥土层以及砂土土层中对复合型土钉墙支护变形性状的影响。

Considering the characteristics of KEM and complicated soils in practice, one rule is given to describe soils borderline and borderline's points, and so the problem to delineate soils and ground seepage is solved.

针对KEM和实际工程中复杂土体的特点，本文建立了一套土层边界线编号和每条边界线上点号的规则，解决了复杂土体内各土层的数学描述问题以及土体内地下水渗流的数学描述问题。

General procedure for liquation experiment of tailing dam s has been generalized,that is,preliminary identification has to be done for tailing dam s according to Design Code for seismic building's identification conditions.

概述尾矿坝液化试验判别的一般步骤，即根据《建筑抗震设计规范》中的初判条件对尾矿坝土层进行初判，在尾矿坝土层不满足初判的条件下，利用标准贯入试验对尾矿坝是否存在液化危害进行复判。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失