查询词典 3D

The result show that the position of free surface is higher because of frusta of brake, especial obvious in the head of frusta of brake; flux coefficient and pressure on dam are quite influenced by type of frusta and 3 A type frusta of brake relative to 2 type frusta of brake has bigger flux coefficient and smaller pressure on dam; Obvious influence of ability of discharge flow for different ratio of thickness of frusta and breadth of brake and pressure on dam reduces with increasing ration of thickness of frusta and breadth of brake, while bigger flux coefficient is obtained when tlb = 0.2.(7)The 3D free surface turbulent model established in the paper is comparatively well and truly simulates 3D flow over spillway with frusta of brake and series waterpower computation can be completed aim at different type of dam, type of frusta and disposal on the dam and different water height on peak of

结果表明，闸墩河海大学博士论文的存在抬高了水面线的位置，其中在闸墩头部尤其明显；墩型对流量系数和坝面压力影响较大，3A型闸墩相对于2型闸墩具有更大的流量系数和更小的坝面压力：不同的墩厚闸宽比t/b对泄流能力也将产生显著的影响，随着墩厚闸宽比的增加，坝面压力降低，而当t/b二0.2时溢流坝具有更大的流量系数。7本文建立的三维自由面湍流场模型能够比较准确地模拟带闸墩溢流坝三维过坝水流湍流场，可以针对不同的坝型、墩型、坝面布置形式以及不同的坝顶水头完成系列水力计算，为泄水工程建筑物的设计提供可靠的分析依据

A 3D lithosphere model of the Indo-Australian plate is constructed and numerical simulation of the tectonic stress field of the Indo-Australian plate is performed by using the pseudo-3D finite element method and adopting the WSM2000 observed stress data and stress state as constraints, and then the influence of the boundary forces applied at the Indo-Australian plate on the intraplate stress field is discussed.

本文采用伪三维有限元方法，利用 WSM2000观测应力场数据的应力取向和应力状态作为主要约束，建立了印度—澳大利亚板块岩石层三维模型，对印度—澳大利亚板块构造应力场进行了数值模拟，进而探讨印度—澳大利亚板块所受边界力对板块内部应力场的影响。

For rapid inspection of small and middle-sized part, a round view surface scanning method is presented based on 3D laser machine vision. Influence of random factors in points selection and part location can be avoided by a round-view comparing for measurement of 3D object.

针对中小零件的快速检测问题，本文提出了一种基于激光机器视觉的全貌测量方法，通过三维实物的全貌比较测量，可避免由于测点选择及检测系统定位中的偶然因素影响，比一般的基于单点测量的方法更为准确可靠。

GCubik exploits the Integral Photography technology to enable 3D images to be viewed with the naked eye rather than through sophisticated 3D glasses.

gCubik利用积分摄影技术，使三维图像，还可以用肉眼而不是通过复杂的3D眼镜。

A novel method is proposed to construct 3D shape descriptors by extracting rotation invariants of 3D models.

提出一种新的基于三维模型的旋转不变量的形状描述子。

To the complicated reservoirs and oil-water relation, the author employs fine structure interpretation, undee aberration technology, fuzzy NN, multi-well inversion, reservoir modeling and forecast, seismic facies interpretation and 3D visualization to increase the descriptive precision of complicated reservoir, and applies the stacked processing technology of 3D seismic data to provide a technical support for the drilling development in the eastern Daqing area.

并针对油田开发难度逐年增大，储层条件和油水关系日趋复杂的情况，综合应用精细构造解释、波形畸变技术、模糊神经网络技术、多井约束反演、储层正演技术、储层预测技术、地震相解释技术及三维可视化技术，提高了复杂岩性油藏的描述精度，并应用三维地震资料连片处理技术，为大庆外围东部地区后继的钻井开发提供技术保障。

3D interaction network courseware places the users to real experience surroundings,which the 2D courseware hardly possible to realized.Along with the development of the computer and the Internet technology,3D interaction network courseware possibly will be the trendiness in the teaching software field under the development of the computer science and the Internet technology.

1研究背景物理是一门以实验为基础的学科，物理实验教学的任务是通过实验加深学生对物理知识的认识，培养学生理论联系实际的能力让学生学会常用的物理实验方法和测量技术，提高学生的实际操作技能和独立工作的能力同时使学生掌握科学研究的一般步骤、方法，学会合作，努力创新。

It's a slice/deposit technology. It slice 3D solid along a direction, abtained 2D outline data, after made all sliced plane deposit planes to deoxidize 3D sloid.

它采用离散/堆积的加工技术，将三维实体沿某一方向进行分层处理，依据二维截面轮廓数据加工层片后堆积还原成三维实体。

Based on the 3D solid model, the changing trend of spiral angle and pressure angle of pitch cone, the thickness-changing trend of face and pitch cone can be analyzed. In addition, the method of cutting tooth on general NC machining center and the measurement of tooth flank geometry on 3D CMM are conducted.

根据锥齿轮切齿仿真所获得的三维几何模型，本文还研究了在通用四轴联动加工中心上加工锥齿轮齿形的方法和在通用三坐标测量机上进行锥齿轮齿面几何形状误差测量及数据处理方法。

A 3D geological visualized model is prepared based on control point data, drill hole data and orientation data of discrete engineering as measured, which is able to conduct 3D visualized analysis closely related to a given project.

根据实测的离散工程控制点数据、钻孔数据和产状数据，构建了三维地质可视化模型，并能进行与工程密切相关的三维可视化分析。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。