查询词典 loess

The critical loess slopes along the highways were the inputted form of slopes and measured values of cohesions and internal friction angles were the reference values of random variants. Monte-Carlo method was used to choose samples and the formula of the Bishop simplified method was regarded as control equation. The reliabilities of the loess high slopes in three positions of Shaanxi Province were simulated. Failure probability and reliability index were obtained.

以极限状态坡作为输入坡型，将陕西黄土地区公路勘察中实测的粘聚力和内摩擦角作为主要随机变量参考值，采用Monte-Carlo法抽样，简化Bishop法公式作为控制方程，对陕西地区3个地段的黄土高边坡进行了可靠度模拟，获得黄土高边坡的失效概率与可靠指标。

Compared with the exponent function, the power function can be more suitable for fitting the change of chemicals concentrations in runoff under unsaturated conditions from the loess slope,as well as,the mass loss of potassium and bromine in runoff,but not for initial phase. The study offered a reference for developing the model of soil nutrient in runoff transport of the loess slope.

同时利用两种类型描述径流养分浓度模型对实测资料进行分析，结果显示与指数函数模型相比较，采用幂函数模型能够较好地模拟黄土坡面非饱和条件下径流溶质浓度变化过程，同时幂函数模型也能够较好地描述径流中钾离子和溴离子的质量变化过程，为进一步完善黄土坡面径流养分迁移模拟模型提供了参考。

Its rule of change was obtained. On the basis of other studies, the flocculation kinetics and flocs structure was studied. By making some assumptions, collision frequency were presented. Then the the flocculation kinetics model was established through population balance equation. Comparison of experimental data and modeling results indicate that there are the same trend between the two. So the model can predict flocs number and size during flocculation of Yellow River's loess particles without using empirical parameters. The TEM and SEM were used to obsever flocs in the study of floc structure. The flocculation was divided as flocculi, floc and floc aggregate. The flocs structure model was established by assumption that particles position in floc accords with tetrahedron. The fractal dimension of model and experimental flocs was found to be coincident. So the model can reflect the structure of flocs formed in flocculation of Yellow River's loess particles by macromolecule flocculant at a certain extent.

最后，本文还对絮凝动力学和絮体结构进行了研究，在前人研究的基础上，针对高分子絮凝黄河泥沙，对絮凝过程作了一些符合试验条件的假设，建立了颗粒碰撞频率表达式，应用了颗粒数量平衡方程，从而建立了絮凝过程的动力学生长模型，模型计算结果与试验数据对比表明，二者趋势一致，在没有使用经验参数的情况下基本上能够描述黄河泥沙絮凝过程中絮体数量和尺寸分布的变化过程；对絮体结构的研究中，应用扫描电子显微镜和透射电子显微镜对絮体进行了观察，将絮体分为絮粒、絮团和絮网三个不同的生长阶段，通过假设颗粒结合位置符合正四面体，建立了絮体结构模型，计算得到的模型絮体分形维数基本与试验中的实际絮体相符，在一定程度上能眵反映高分子絮凝黄河泥沙生成的絮体结构。

Its rule of change was obtained.On the basis of other studies,the flocculation kinetics and floes structure was studied. By making some assumptions, collision frequency were presented.Then the the flocculation kinetics model was established through population balance equation. Comparison of experimental data and modeling results indicate that there are the same trend between the two. So the model can predict floes number and size during flocculation of Yellow River's loess particles without using empirical parameters.The TEM and SEM were used to obsever floes in the study of floe structure.The flocculation was divided as flocculi,floc and floe aggregate.The floes structure model was established by assumption that particles position in floe accords with tetrahedron.The fractal dimension of model and experimental floes was found to be coincidentSo the model can reflect the structure of flocs formed in flocculation of Yellow River's loess particles by macromolecule flocculant at a certain extent

最后，本文还对絮凝动力学和絮体结构进行了研究，在前人研究的基础上，针对高分子絮凝黄河泥沙，对絮凝过程作了一些符合试验条件的假设，建立了颗粒碰撞频率表达式，应用了颗粒数量平衡方程，从而建立了絮凝过程的动力学生长模型，模型计算结果与试验数据对比表明，二者趋势一致，在没有使用经验参数的情况下基本上能够描述黄河泥沙絮凝过程中絮体数量和尺寸分布的变化过程；对絮体结构的研究中，应用扫描电子显微镜和透射电子显微镜对絮体进行了观察，将絮体分为絮粒、絮团和絮网三个不同的生长阶段，通过假设颗粒结合位置符西安建筑科技大学博士学位论文合正四面体，建立了絮体结构模型，计算得到的模型絮体分形维数基本与试验中的实际絮体相符，在一定程度上能够反映高分子絮凝黄河泥沙生成的絮体结构。

Abrupt changes in available K resulted from the falling of fine tephra of the YTT eruption, and its abnormal zone about 1 meter thick implied that the fine tephra of the YTT eruption falling in wide provenances of loess was secondly carried with eolian dust into the loess Plateau of China by the East Asian winter monsoon during the early stage of the last glacial period.

固定铵的异常主要记录了YTT事件所产生的酸雨沉降，速效钾的异常则是由于YTT微细火山灰尘在黄土剖面及其广阔的物源区伴随酸雨沉降的结果，厚达1m的异常带表明末次冰期冬季风逐渐强盛和南移的过程。

Water is the primary limiting factor for plant growth and crop production in the loess hilly-gully area of the Loess Plateau.

水分是制约黄土丘陵区农作物正常生长和农业生产的关键因子。

Carrot: the carrot Loess Gong Pa fame far and wide, and three Heba origin related to the soil, loess Gong Village of large dam, the soil is alluvial sand, loose soil, an entire carrot vegetable growth, coupled with intensive cultivation technology and the production of carrots, not only large but also sweet appetizers no miscellaneous flavor is a good Qingrejiedu vegetables for the soup, fried, like all OK, can be processed into butter, vegetables Fu, also can prevent and cure diseases, says:"Winter understand radish, summer eating ginger and did not seek medical prescription" is the carrot both medicinal and health effects.

萝卜：黄土贡坝的萝卜远近扬名，这与产地三河坝的土质有关，黄土贡坝村的大片坝地，属冲积沙泥土，土质疏松，适全萝卜蔬菜生长，加上精耕细作的栽培技术，其出产的萝卜，不但大而且清甜可口，无杂味，是清热解毒的好蔬菜，用于煲汤，炒焖都可以，也可以加工成菜丝、菜甫，还可以防病治病，俗话说：&冬听懂萝卜，夏吃姜，不求医生开药方&故萝卜兼有药用和保健功效。

In the end, an optimal method for determining the stable slope ratio of high loess slope is established, and the means of choosing the slope form is discussed, as well as the suggestion about designating high slope that consists of different genesis loess is put forward.

最后，本文建立了确定黄土高边坡稳定坡比的优化方法，并对边坡型式的选择进行了讨论，提出不同成因时代黄土高边坡的设计建议。

Magnetic susceptibility, of course, is the best recorder of climatic changes in loess stratigraphy and susceptibility curve of loess stratigraphy can be regarded as the proxy of climatic changes.

古土壤中枫杨为主的阔叶树花粉曾高达60％，而〓内麻黄属含量亦超过50％，说明形成环境相差极大。

According to different spatial strikes of loess hidden cave ,the disaster-causing effect of loess hidden cave on highway bridge is divided into two modes: toppling-failure mode and sliding-failure mode.

根据黄土暗穴空间走向的不同，将黄土边坡桥基下伏暗穴对桥梁的危害归纳为倾倒破坏模式和滑塌破坏模式。

On closer examination, though, this is not a vote for multilateralism but just the opposite.

仔细审视后我们发现，这并非是对多边主义投出的赞成票，而是恰好相反。

Uncovering their weak spots, so I can defeat them.

揭露出他们的弱点，这样我就可以打败他们了。