三维

In most cases, time-lapse seismic is taken by repeated 3D seismics,so it is also called 4D seismics.There are many other time-lapse observation methods besides the 3D time lapse seismic such as time lapse 2D seismics,time-lapse cross hole seismic,time-lapse VSP etc.

由于大多数情况下，时移地震都是通过重复三维地震进行的，因此国内外很多学者也将其称为四维地震，除三维时移观测外，还有很多其它的时移观测方法，如时移二维地震、时移井间地震、时移VSP等。

The "spiculation"sign raised accurate rate of the diagnosis by 11.8%.Conclusion Real-time three-dimension ultrasound is a good supplement of two-dimension ultrasound.It can give more diagnosis information of the breast mass,especially to the small mass which can not be diagnosed definitely by two-dimension ultrasound.To analyse the characteristics of coronary section will improve the diagnosis accurate rate of the breast cancer.

三维超声是对二维超声检查的一个补充，它为诊断乳腺肿块的良恶性多提供了一些观察的指标，尤其对那些在二维图像上不能明确诊断的小肿块，加用三维扫查，注重分析冠状切面特点，有助于提高诊断的正确率。

Compared with 2D video,the depth information of scene has been added to 3D video,and the reality of visuality has also been enhanced,which can provide the feeling of immension in all domains.3D video technology can be widely used in digital television,mobile device systems,3D video-conferencing systems,virtual reality systems,and so on.

随着多媒体技术的不断发展，视频技术也需要从二维向三维转变，和普通的二维视频相比，三维视频增加了场景的深度信息，增强了视觉的现实感和逼真感，可以给用户提供全方位沉浸式的感受。

The results of numerical analysis show that the elastic modular and the poisson ratio have no effect on two-dimensional bearing capacity, but can affect the ultimate bearing capacity of three-dimensional foundations and control the convergence and precision of finite element calculation; the earth pressure coefficient controls the geostatic stress of foundation, sequentially affects the ultimate bearing capacity of foundations and the convergence of numerical calculation. When calculating the ultimate bearing capacity of undrained saturated foundation, the complete formulation exists shear locking, and reduce formulation exists hourglassing, so the hybrid formulation is suitable to imitate the geomaterial. When the soil obeys nonrelevent flow rule, the yielding function is different from potential function, and the elastic-plastic matrix of soil is asymmetric, so the unsymmetry numerical solver and appropriate finite element mesh is required.

研究结果表明，土体弹性模量和泊松比对二维基础极限承载力没有影响，但是影响着三维矩形基础的极限承载力，控制着ABAQUS数值算法的计算精度与收敛速度；地基土压力系数控制着地基土体中的地应力平衡，从而影响着二维条形基础和三维矩形基础的极限承载力和地基破坏包络面；对于不排水饱和软黏土地基，常规的完全积分单元会造成剪力自锁现象，而减缩积分单元则存在过于柔化的现象，故采用杂交单元来模拟较合适；当土体服从非关联流动法则时，屈服函数与塑性势函数之间存在差异，从而导致土体弹塑性矩阵呈现非对称性，在有限元计算中必须采用非对称数值解法，并且合理地划分单元才能对极限承载力进行准确求解。

The environment of enterprise group development. The paper expounds the external and internal environment of the enterprise group development, the external environment mainly includes economic system, market system, price system and government meddlement etc; about internal environment, the paper proposes three-dimensional model of value distribution in enterprise group, which think that the enterprise group should consider three-dimension as: time, form and process when it distribute its value.

在外部因素方面主要从经济体制、市场体系、价格体系和政府干预等加以说明；在内部因素方面，本文提出了集团内部价值分配的三维模式，认为企业集团在其内部进行价值分配时应充分运用和考虑价值分配的三个维度：时间维、形式维、过程维。

Through 2D axial symmetrical and 3D scarfed reversal nozzle calculating, the main flowfield characters were given, and compared with the experiment data for validation. Then, the program was given, which can well predict the performance of the scarfed reversal nozzle. In this paper, the flowfields of open cavities with different structures and different parameters were calculated. Some new, full and more reasonable mechanism interprets were given. We think that the essential cause of pressure oscillatory is coherent effect of wave, eddy and cavity structure, but the procedure is different with different cavity structure, it can not use single procedure to described.

通过对二维轴对称和三维斜切反喷管的计算分析，本文给出了流场的主要特征，并采用实验数据进行了验证，形成了分析斜切反喷管可靠的应用方法；本文通过对不同结构形式、不同参数的二维、三维非定常超声速开式空腔流动进行的计算分析，提出了较为全面、合理的空腔压力振荡循环机理的解释，本文认为压力脉动本质上是波、涡以及结构之间相互的干扰和耦合，但干扰的具体过程随空腔结构的不同差别较大，不能采用单一的规律进行描述。

The new method for seismic attribute analysis colligates information of seismic,logs and geology by crossplot and broadcast and cluster with the methodology of science instead of analysis with handcraft and eyeballing.With the method,seismic attribute analysis plays an important role in subtle traps exploration. \r\n

指出新型的地震属性分析方法一改以往的手工、目测分析方法，充分利用了二维、三维及多维交汇方法，为属性分选、分析提供了便利的操作手段；新型的地震属性方法还运用科学分类方法，综合地震、测井、地质信息，把剖面、平面及分类结果结合到一起，通过三维一体的相互信息映射，在储层预测中的目标初选及目标分析中起到了举足轻重的作用，真正做到了属性分析的科学性、实用性。

In Chapter 4, the Thwaites＇s method for 2-D laminar boundary layer and the Truckenbrodt＇s method for 2-D turbulent boundary layer are developed to solve the"quasi-3-D"equations for the 3-D boundary layers on rotating helical blades, and a integral method, which can be solved by iteration, is resulted.

在第4章中，计算二维层流边界层的Thwaites方法和计算二维湍流边界层的Truckenbrodt方法被推广用以解关于旋转螺旋面上三维边界层的&准三维&方程，得到一种可迭代求解的积分方法。

Serein Metrology Co., LTD (former Shenzhen Serein Precision Machinery Co., LTD) once undertook the research and development for related sub-projects within National 863 Plan and was the pioneer high-tech enterprise to industrialize the three-dimensional laser scanning technology. Serein has a strong design and production capacity and provides many series precision measuring products with high quality.

思瑞测量技术有限公司的前身为&深圳市思瑞精密机器有限公司&，是我国最早将三维激光扫描技术产业化的高新技术企业，曾主持承担国家863计划相关项目的研究开发工作，具有很强的研发与生产能力，为中国市场提供了包括一维高度尺、二维影像与三维坐标测量机等在内的多种产品，产品品质优良，市场影响力深广。

Results show that the convergence is improved evidently.(3). The hybrid model which combines three-dimensional simulation in turbine and zero-dimensional simulation in the other engine components is built in the present paper after learning the zooming technique from NASA. The matching between components in a single-shaft turbojet engine after the turbine retrofitting is studied.

在对以上三种不同层次的数学模型及其解法进行了研究的基础上，鉴于NASA的部件一维仿真与总体零维仿真相结合的ZOOMING技术，本文采用将涡轮的全三维仿真与发动机总体的零维仿真相结合的方案，对某单轴涡喷发动机在涡轮改型后的匹配问题进行了研究。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。