三维

It has the following characteristics: 2D drawings can be maintained with a high degree of consistency of 3D model; CAD /CAPP /CAM are integrated by the generation of comp lete manufacturing information and the integrated digital p roduction line of shell, outfitting and painting is imp lemented basically; the generation of comp lete manufacturing and management information of shell, outfitting and painting lays the foundation for the integration of design, manufacturing and management; the entity and parametrized technology is used to ensure the establishment of ship p roductmodelwith comp lete topology relations; and the data interfaces for the heterogeneous CAD data and information integration ensure the collaborative design for the factories and the institutes.

SPD系统具有如下特点：能保持三维模型与二维图纸的高度一致；通过生成完整的加工制造信息实现CAD/CAPP/CAM集成，基本打通&壳、舾、涂一体化&的数字化生产线；通过生成壳、舾、涂完整的制造和管理信息，为实现船舶&设计、制造、管理一体化&奠定基础；通过实体和参数化技术为建立具有完整拓扑关系的船舶产品模型提供有力手段；并通过与其他系统的数据接口实现异构CAD的数据和信息集成，为厂、所协同设计创造技术条件等。

Objective To evaluate the value of two-dimensional CT and three-dimensional CT in the Diagnosis of maxillofacial diseases.

目的 探讨二维CT及三维CT成像相结合在颌面骨病变中的应用价值。

Experimental results indicate that: The AE characters of single bundle, 2-D woven and 3-D braided C/SiC composite are different because of their different structures, damage mechanisms and developing progress, which can be verified by micrographic examination on specimens' initial state and fractography.

实验研究表明：单纤维束、二维编织和三维编织C／SiC复合材料由于结构形式不同，损伤机理和发展过程不同，表现出的声发射参量的特性也不同；试件初始状态和断口的显微观察证实了该推断。

The experimental results indicate that the maximum slope angle measured by LSCM reaches at least 50°, and the clear three dimensional profile is obtained in the profile analysis of cantilever. Meanwhile, the deformation accurately measured by two dimensional quantitative analysis is 3.145μm, and the field area is 384μm×288μm in mosaic function equipped with LSCM in 100×objective, which can solve the problem that the watched object's total shape in single frame micrographic image can not be obtained under high microscopic enlargement times.

实验结果表明：运用LSCM测量的斜面最大角度至少可以达到50°；在悬臂梁的形貌分析中，可获得清晰的三维形貌，同时通过二维定量分析精确测得其形变为3.145μm：在100×物镜下，运用拼接功能获得384μm×288μm的视场面积，解决了高放大倍数下，在单帧显微图像中无法获取所观测对象全貌的问题。

Holographic hot gold foil is thin with hot stamping feature laser treatment for holographic foil, forming a 2-d, 3-d, dot-matrix, spiral-shaped, holograms and other images with high-gloss paragliders and may attract hundreds of thousands of color mistify that overcomes the ordinary form of blocking technology, poor quality, lack of security bugs such as the effect.

激平残息烫金箔是差具有烫印功用的薄箔举行残息激平办理，形不败二维、三维、点阵、旋状、分不败残息等图像，具有矮平泽、奼紫嫣红并可幻化万千的色彩，降服了别致烫金技艺活命步不天驳杂、质度不矮、充足不攻伪不败果等弊端。

When calculating sensitivities matrix, instead of computing 3D sensitivities, we attempt to compute 1D sensitivities. Since the sensitivity elements of nonstations are zero, which should be nonnegligible values, we adopt a method of approximation.

在计算灵敏度矩阵时，吸取近似灵敏度矩阵思想，采用一维灵敏度矩阵来代替三维灵敏度矩阵，并对非测点的灵敏度元素提出一种近似方法。

This paper analyzed the mechanism of concurrent operation conflict in collaborative CAD system.It presented the general expressing method of operation order,put forward the versatile distinguishing inferential method based on this description,and this method is applied to the analysis of concurrent operation conflict in 2D graphics system and 3D feature modeling system of products based on field knowledge.The results oftest show that this method is feasible with a high collaborative efficiency.

分析了协同CAD系统的并发操作冲突的机理，给出了操作命令的一般表示方法，提出一个通用的基于该描述的冲突判别推理方法，并基于领域知识将该方法用于二维绘图系统和三维产品特征建模系统中的并发操作冲突的分析，实验结果表明该方法可行，协同效率高。

VOF method was used to track the shape and location of free face, and PISO method was used to couple the velocity field and pressure field.

为了验证数值模拟的准确性，对二维、三维数值模拟结果与试验结果及理论分析结果进行了比较。

For obtaining good structural perfection, the molecular beam epitaxial growth of Ge〓Si〓 on Si substrate should not only be in pseudomorphic form but also in layer-by-layer growth stage.

本文通过对Ge〓Si〓/Si异质体系的生长模式的研究发现，Ge〓Si〓在Si衬底上只能在一定的厚度范围内保持二维生长，超过这一厚度范围就变成三维生长。

The result showed that the mixed dimeusiohal model generated by this mathod only needed shorterrunning time and smaller 3D model, but the more precious resuit could be obtained.

分析结果表明通过该方法所产生的混合维模型只需较短的运行时间和较小的三维模型就可获得较精确的分析结果。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。