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With application of plastic limit analysis method using finite element method, stability of high loess slope is analyzed and solved by using linear programming method in this paper. Safety factor and stress fields and velocity fields of slope can be obtained.

本论文采用有限元塑性极限分析法对黄土高边坡进行稳定分析，并运用线性规划的方法对稳定问题进行求解，可以得到边坡的稳定安全系数和边坡的应力场及速度场。

He says: il se promène, lisant au livre de lui-même , don't you know, reading the book of himself .

他说： 他边读一本写他自己的书，边漫步。要知道：边读一本写他自己的书。

In case of no absolute slip surface being found in slope,the analysis of slope stability using limit equilibrium method requires the determination of critical slip surface with the minimal factor of safety .

当边坡内没有明显的断裂面控制边坡的破坏时，应用极限平衡方法计算边坡安全系数需要确定具有最小安全系数的滑面。

This study chose the dahongshan mine which has very important significance to the developing of yunnan iron and steel industry as our work station in which we build six runoff plots according to loss type and chose three place to earth up to observe the rule of the soil moving on the mullock stone and study the eroding rule of the barren side slope with eroding nail experiment.

本研究选择新建的、对云南钢铁工业发展具有重要意义的大红山铁矿进行矿山水土流失研究，按土壤侵蚀类型建立六个径流场进行观测，利用侵蚀钉对人工堆积边坡、裸露自然边坡和公路边坡侵蚀进行研究，在废石场选择三个点进行覆土实验对废石场覆土的潜移和管状侵蚀量进行观测。

Direct difference is sensitive to noisy data, so a threshold limitation is given, which can not only filter the result from noisy data but also pick edge points up according men's desire. On the other hand, artificial intelligence is used for segmentation in reverse engineering. Because the essence of segmentation is clustering similar characteristics and self-organizing feature mapping is one function of neural network, SOFM network is used for segmentation in the thesis, coordinates and normal of data points is took as the characteristics vector.

第二种方法，基于双向角度微分的边点提取法，针对三维正交模型采用基于截面线的方式组织数据，此方法比基于曲率半径方法更简洁，不用进行曲面拟合，大大提高了计算速度；计算过程中由数据点的直接差分逼近微分，但直接差分对数据误差敏感，为此，本文提出了阈值过滤的方法，一方面过滤了数据误差在计算结果中引起的噪音，另一方面可以按照设计意图控制边点的提取；来决定是否提取光滑交接的边点。

The result shows that the real state of slope is similar to the forecast result. So it has good practicability that the neural network is used to appraise the open-pit slope stability. The study and application of this method has a great theoretical and practical value for open-pit slope stability analysis.

计算结果表明：边坡实际状态和预测结果十分相近，因此运用神经网络模型评价黄上地区边坡的稳定性有较好的适用性，该方法对露天边坡稳定性预测预报具有重要的理论意义和实用价值。

This machine is used for hardcover,book cover''''s paperhanging,tumbing box leading cover to binding equipment,holding in tow side paperboard,and tumbling box press the remain air.It makes cover smooth and beauty,the size can adjustby hand,work with single edge binding machine can finish the whole craft simply and quickly.

用途： 此机台针对精装书壳，文件夹、书面的装裱成型，其道动滚筒将封面引至包边装置，由包边装置将粉纸两边折入紧贴灰板纸，压轮及滚筒将空气压出，令封面平整、光滑、美观，尺寸大小由手轮任意调节，操作简捷，配用单边包边机，完成整个工艺。

The grazing bifurcation point is found in terms of the conditions for the existence of grazing orbit.The bifurcation diagrams are gained through previous piecewise smooth map and numerical calculation,they are similar structurally.

利用擦边分岔条件找到了此系统的擦边分岔点，利用推导的擦边分岔的分段映射和直接数值仿真获得不连续分岔图，两者得到的分岔图在结构上是类似的。

There are package edge, fold, bend side, special screen, and the production of stainless steel mesh, polyurethane screen, industrial filter cloth, highways and Conservation Network, highway fencing wire mesh, welded wire mesh, copper wire, pig production, such as bed dozens of products, and import substitution screen.

有包边、折边、弯边、异型筛，并生产不锈钢筛网、聚氨脂筛网、工业滤布、公路护网、高速公路护栏网、电焊网、铜丝网、养猪产床等几十种产品，并替代进口筛网。

One is in the north bedroom, one is between the west bedroom and the south bedroom, one is next to the garage in the downstairs, and one is next to the ping-pong table in the downstairs.

一间在北边忌睡房，一间在西边同南边忌睡房之间，一间在车房侧边，一间在楼下厨房侧边，一间在楼下乒乓台侧边。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。