There are two key techniques in reverse engineering, the numeralization and surface reconstruction of 3D objects.

三维物体的数字化技术及曲面重构技术是逆向工程的两个核心问题。

A three-dimensional numerical model is developed to simulate reaeration in rivers using a body-fitted coordinate system .

本文建立了适体坐标系下的河流三维复氧数学模型。

Three-dimensional(3D)unsteady compressible flow over an open cavity and the relevant aeroacoustics are studied using a hybrid LES-acoustic analogy method.

使用大涡模-声学结合的方法,研究三维开式空腔的非定常可压缩过流及其关的气动声学问题。

This paper presents an attempt to evaluate the explosible gas distribution by solving the concentration equation based on the previously simulated wind flow field.

本文介绍了一种基于κ-ε流模型的研究可爆性气体泄漏扩散的三维数值模方法。

As a result, this paper presents the 3D reconstruction segmentation display, and analysis results of pollen spore, chaperonin, head, cervical vertabra, tibia and carpale.

实现了花粉孢子、分子伴侣、以及头颅、颈椎、胫、的三维重建分析测量与分割。

Analyzing 30 example calcaneum bone fracture screw CT three dimensional reconstruction performance, the CT type, according to type instruction clinical choice suitable treatment plan.

分析30例跟折的螺旋CT三维重建的表现、CT分型，根据分型指导临床选择适合的治疗方案。

Another group used the 3D information provided by intaglio printing, which raises the ink of letters or features much higher than occurs with conventional anastatic printing.

另一组人员则运用凹印提供的三维信息。凹印文字或图案的油墨堆积传统的锌版印刷要厚实。

Based on the theory of interaction of fluid-solid, tridimensional FEM model of dam-aircushion-water is introduced.The vibration isolation mechanism and effectiveness of air cushion has been studied.

摘要从流固耦合理论出发，介绍了坝体-气幕-库水隔震的三维有限元理论模型，研究了气幕隔震的减震机理和隔震效果。

Hereinto, the numeralization of 3D prototype is the firstly important process.The accuracy of the objects’ numeralization will influence the quality of the digital reconstruction of the objects.

三维原型的数字化技术是逆向工程中的首要环节，其得到的原型数据精度将直接影响到重建模型的质量。

The facility measuring 3D glow curve is mainly consists of a polychromator, linear sample heater and a high sensitive CCD detector which are interfaced to a microcomputer.

在所研制的三维发光谱测量系统中，采用内置平面光栅的多色仪分光，由联机控温的加热器加热样品。