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It is very important to dynamically simulate and forecast the development and evolution of soil erosion processes.

动态模拟和预测土壤侵蚀的发育及演化过程具有十分重要的意义。

It played a key role in the evolution of Northern Song Dynasty.

但在当时，这一集团的政治地位并不高。

The multiple superpositional evolution of the Tarim basin is controlled by the wave prcesses of earth's crust, and the main cycles of these processes are 740～760Ma, 200～230Ma, 100～110Ma, 60～70Ma and 30Ma.

塔里木盆地的多期叠合发展受地壳波状运动的控制，控制塔里木盆地的主要周期有740～760Ma、200～230Ma、100～110Ma、60～70Ma、30Ma。

Using a one-dimension magnetic filament in the Earth\'s magnetotail to represent the bubbles,we examine the motion of bubbles created by reconnection in the Earth plasma sheet.Some properties of time evolution of the filament can be obtained from the numerical simulation.The magnetic field line in the filament created by reconnection is more dipolar than the surrounding magnetic field line,and the motion of the filament displays a strong earthward flow.The results show that MHD waves such as an Alfv?

本文研究地球等离子体片中重联后的磁泡的运动，用地球磁尾中的一维磁细丝来表示磁泡，通过数值模拟发现，重联产生的磁细丝磁场比周围磁场偶极性更强，运动时表现出了很强的地向流。

As the age of the season, the Mid-Autumn Festival formed late, but this move is long moon, the Eastern Jin Dynasty, in Nanjing,"Niu Houzhu moon", that is has been the most influential take stories, as well as for thousands of years evolution of the broad masses of people to celebrate the Mid-Autumn Festival Music Festival.

作为岁时节令，中秋节形成较晚，但玩月这举却由来已久，东晋时，在南京"牛渚玩月"，即是流传至今影响最广的赏月佳话，以至演化为千百年来广大人民群众乐以欢度的中秋节佳节。

The basal geomorphology structure of the Tidal-Basin System of the Tiaozini Sandbanks is watershed and tidal creek system. We analyses its formation, evolvement, geomorphology characters and development and discusses the main influence factors which is water, sediment and space. We divide the evolution phases which is formation phase, autumn phase and contabescence phase. In the end we confirms its main functions, which is discharging the folium water on the tidal flat of the Tidal-Basin in the end of the ebb-tide, transporting sediment to Tidal-Basin through tidal creek systems, confining the swing range of the dynamical axis of flood tide or ebb tide, balancing the dynamical status of the South and North. At the same time, we compare coastal tidal-basin and sandbanks tidal-basin on geomorphology characters, formation causes, style and so on.

条子泥潮盆—潮沟系统的基本地貌结构为分水滩脊和潮沟系统，本文分别对它们的形成与发育、地貌特点及动态变化进行了分析，并探讨了影响其发育的主要因素，即来水条件、来沙条件、空间条件，划定了其主要发育阶段，即形成期、成熟期、衰亡期；在上述分析的基础上确定了潮盆—潮沟系统的主要功能，即通过潮沟系统渲泄落潮后期滞留在其潮盆范围内的滩面薄层水、通过潮沟系向潮盆内部输入或输出泥沙、限制涨落潮动力主轴摆动范围、平衡南北两侧动力状态；同时针对岸滩潮盆—潮沟系统与沙洲潮盆—潮沟系统的地貌特征、成因类型等进行了对比分析。

The whole failure process of the echelon fault structure is revealed by evolution of the deformation field.

全场连续的变形数据清晰地反映了雁列断层结构的变形破坏过程的各种细节。

The available published literatures on echinoderm immunological mechanisms are compiled and discussed here to understand its evolution process and the hot spots or directions in future investigations.

因此，有必要对棘皮动物的免疫学研究进展作一个较全面的综述，并理清未来的研究热点和方向。

The bat fossil can tell researchers about the evolutionary history of echolocation and the evolution of life in the early Tertiary.

研究者们从蝙蝠的化石中获悉回声定位的进化历史和第三纪早期的生物生活。

The distribution and time evolution of the eddy current losses are also discussed in this paper.

文中给出涡流损耗的分布及其随时间变化情况。

However it can often be frust ating for a child when people are unable to pronounce their name.

但它往往可以令人沮丧的一个孩子当人们无法断言他们的名字。

All these compounds were obtained from this genus for the first time. Compound, 4-cumylphenol, was a new nature product.

所有化合物均为首次从本属海藻中分离得到，其中4cumylphenol为新天然产物。