查询词典 soils

By using Lee\'s matching law, the excess pore-air pressure, excess pore-water pressure and settlement in the Laplace-transformed domain are obtained for one-dimensional consolidation in unsaturated soils, under the large-area uniform instantaneous loading. A computer program using the method by Crump and Durbin is developed to obtain the semi-analytical solution of the excess pore-air pressure, excess pore-water pressure and settlement under the boundary conditions of the top surface permeable to water and air and the bottom impermeable to water and air.

8采用李氏比拟法，应用Merchant粘弹性模型，得到了Laplace变换域内粘弹性非饱和土地基一维固结时超孔隙水压力，超孔隙气压力以及土层沉降的解；采用Crump及Durbin方法实现Laplace逆变换，获得大面积均布瞬时加荷，在顶面排气排水，底面不排气不排水情况下粘弹性非饱和土地基一维固结时的半解析解。

Aimed to provide a theoretical basis for reasonable arrangement of Cryptomeria japonica the relationships between the growth of the tree and the rock soils were studied.

通过对日本柳杉的生长与土体关系的研究，为其合理布局提供理论依据。

The interaction between cutterhead of shield machine and soils was simulated. The investigation shows that there exists a wider range from active pressure to passive pressure for supporting face stability.

研究表明，仅从保证地表既不隆起又不沉陷的约束条件考虑，掘进工作面从主动土压力到被动土压力存在较大的范围。

The realistic face pressure is expected to be equal to earth pressure at-rest both for making face stability and decreasing fraction resistance between cutterhead of shield and soils during tunneling process.

考虑到减少刀具磨损和节约能源问题，推荐理想的掘进工作面土压力为静止侧向土压力。

Based on definitions of stress and strain, and the D'Alembert's principle, stress and strain of soils at various depths were derived from the data of acceleration, displacement, as well as excess pore pressure measured in the test. The stress paths and stress-strain relationships of saturated sand during the shaking event, and their connection with development of excess pore pressure were revealed.

根据应力和应变的定义以及达朗贝尔原理，由试验观测的土体加速度、位移和孔隙水压力数据直接推导得到不同深度处砂土的应力和应变，揭示了振动过程中饱和砂土的应力路径和应力-应变关系演化过程，以及与超静孔隙水压力发展的联系。

A review was presented of application of various chelating agents, such as EDTA、EDDS, to heavy-metal contaminated soils to stimulate phytoremediation of the soil in recent years. In addition, an introduction was made to the development of a new decomposable chelating agent, EDDS, and in the last part some existing problems were discussed and foci of the future study were prospected.

本文综合介绍了近年来EDTA等多种螯合剂在植物修复重金属污染土壤中的应用，同时介绍了一种新型易降解的螯合剂EDDS的研究进展，最后对存在的问题进行了讨论，并对未来的研究重点进行了展望。

Inoculation of effective degraders to the modified polluted soils spiked with 2-nitrophenol was carried out by batch culture. The concentration of 2-NP、pH values and the number of 2-nitrophenol degrader were monitored in the experimental period to understand the variation of test strains.

将试验菌株接种於模拟污染土样中，进行批次生物降解实验，监测实验过程之2-硝基酚的菌数、浓度及pH值，并研究外加硝酸钾和氯化铵及混合菌种培养对於模拟污染土样之影响加以探讨。

The product is a concentrated alkaline cleaner and degreaser specially formulated for the removal of heavy soils, grease and oils.

本产品是碱性浓缩清洁剂，能有效清除各种油脂及其它顽固油性污垢。

However, the effects of organic matters on dehydrogenase activity were reverse in the two soils.

但对过氧化物酶的影响，在供试两种土壤上，有机物料的作用正相反。

The process of ecological degradation in the vicinity of Shaoguan Pb/Zn smelter may be summed as: heavy metals and acidic deposits from the waste gas from smelter resulted in the vanishment of the sensitive plant species, increasing accumulation of heavy metals in soils and acidification of topsoil worsened the chemical properties and then shallow-rooted plant, mainly the herbaceous, vanished. With the demolishment of the vegetation cover, increasing water-soil erosion worsened physico-chemical properties of soil and, subsequently, some woody plants disappeared and barren land was finally appeared.

该生态系统的退化过程可以归纳为：来自于冶炼废气的重金属和酸沉降导致了敏感植物的消亡，丧失了对土壤的缓冲保护作用；重金属在土壤表层的积累，酸性物质在土壤表层的增加导致的土壤酸化以及由此引发的有机质与养分的淋溶和重金属及Al的活性增加，加剧植被的快速退化，特别是浅根植物的衰亡；地被层的破坏，导致水土流失和土壤侵蚀加深，进一步恶化表层土壤的理化性质，一些木本植物随之消失，最终形成光板地。

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