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visualizing technology
相关语句
  可视化技术
     CT Image Processing and Visualizing Technology
     CT图像处理及可视化技术的研究
短句来源
     3D VISUALIZING TECHNOLOGY OF WELL PLANNING AND WELL PATH CALCULATION FOR DIRECTIONAL AND HORIZONTAL WELLS
     定向井水平井轨道设计和轨迹计算分析三维可视化技术
短句来源
     Primary Analysis of Visualizing Technology of Carrying Logistics
     在运物流可视化技术浅析
短句来源
     With the fast development of the computer technology, communication technology, multimedia technology, graph and picture technology and visualizing technology, the virtual prototyping, virtual design and virtual manufacturing based on the virtual reality technology, have been used in the realizing production.
     随着计算机技术、通讯技术、多媒体技术、图形图像技术和可视化技术的迅速发展,以虚拟现实技术为基础的虚拟原型、虚拟设计、虚拟制造,已广泛地应用到实际生产中。
短句来源
     Science visualizing is to display result on 3-D data field using visualizing technology. It consist of simulation of logic layout, the after-treat and alternation-treat of result.
     科学可视化运用可视化技术在三维数据场上显示科学计算结果,包括逻辑布局的仿真模拟、计算结果数据的后处理和交互处理。
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  对象可视化技术
     This paper discusses the function or 3D entity modelling tool based on object-oriented method and analyzes some key problems of this software development; algorithm of hidden surface removal, object-oriented graphical database,3D visualizing technology and so on. The tool bas been realized on pentium Ⅱ microcomputer.
     讨论了面向对象的三维实体造型工具-OO3D的功能,并对该软件开发中的几个关键问题:消隐算法、面向对象图形库、三维对象可视化技术等进行了分析、该工具已在PentiumⅡ微机上实现。
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This paper discusses the function or 3D entity modelling tool based on object-oriented method and analyzes some key problems of this software development; algorithm of hidden surface removal, object-oriented graphical database,3D visualizing technology and so on. The tool bas been realized on pentium Ⅱ microcomputer.

讨论了面向对象的三维实体造型工具-OO3D的功能,并对该软件开发中的几个关键问题:消隐算法、面向对象图形库、三维对象可视化技术等进行了分析、该工具已在PentiumⅡ微机上实现。

Scheme design and packing problems with behavioral constraints (inertia, balance, stability and vibration etc.) and constrained layout optimization problems belong to NPC. They are concerned more and more in recent years and arise in a variety of application areas such as the layout design of spacecraft, shipping, vehicle, machine tool, and robot etc. Taking the layout design of artificial satellite cabins as background, a human computer interactive genetic algorithm is proposed for solving the two dimensional...

Scheme design and packing problems with behavioral constraints (inertia, balance, stability and vibration etc.) and constrained layout optimization problems belong to NPC. They are concerned more and more in recent years and arise in a variety of application areas such as the layout design of spacecraft, shipping, vehicle, machine tool, and robot etc. Taking the layout design of artificial satellite cabins as background, a human computer interactive genetic algorithm is proposed for solving the two dimensional constrained layout optimization problems in this paper. Firstly, the algorithm makes the artificial individuals (AIs) as a part of the chromosome population and divides the population into some subgroups. Secondly, each subgroup, whose values of crossover and mutation operators are different from other subgroups, operates independently. After copy, crossover, and mutation operations, the better individual in each subgroup is transferred to adjacent subgroups. Thirdly, human expert examines the locally optimal solution that can be obtained through the loops of many generations and designs new AIs with visualized technology. By the way, he finds these new AIs according to the value of fitness function, then to many actual engineering factors. Finally these new AIs are copied in order to ensure that they play an important role in chromosome population. Then they are placed into the chromosome population to replace the worse individuals. The four steps mentioned above are repeated until the human expert finds the satisfied solution. And then human computer interactive genetic algorithm is formed to solve the practical engineer layout problems and the specialties of human and computer can be exerted to the utmost respectively. The results of three examples(one of them is proposed by the authors, and its optimal solution is known)show that this algorithm is feasible and efficient. The human computer interactive genetic algorithm provides an effective approach for the practically complex layout problems in engineering, as well as for the problems of maneurerability of human computer interaction.

复杂工程布局 (如卫星舱布局 )方案设计问题在理论上属带性能约束的布局优化问题 (NPC问题 ) ,很难求解 ,因而目前研究得尚少 .为解决此类问题 ,该文提出了一种人机交互的遗传算法 .该算法首先将人工设计的个体作为染色体群体的组成部分 ,然后在遗传运算中 ,把人工适时设计的新个体加入到染色体群体中 ,以代替群体中的较差个体 .从而构成人机交互的遗传算法 ,这样可以充分发挥人和计算机各自的特长 .文后通过 3个算例 (其中一个为作者构造的已知最优解的算例 )的数值计算 ,验证了该算法的可行性和有效性 .

Objective To study changes on hemodynamics of fetal umbilical artery (UA) and middle cerebral artery (MCA) in pregnancy induced hypertension (PIH), to evaluate the utility of color Doppler blood flow visualize technology in PIH. -Methods Color Doppler blood flow visualize technology was used to detect pulsatility indexes (PI) and resistance indexes (RI) of fetal umbilical artery and middle cerebral artery in 95 normal late pregnancies and 52 PIH cases. The ratios of MCA - PI/UA - PI and MCA - RI/UA...

Objective To study changes on hemodynamics of fetal umbilical artery (UA) and middle cerebral artery (MCA) in pregnancy induced hypertension (PIH), to evaluate the utility of color Doppler blood flow visualize technology in PIH. -Methods Color Doppler blood flow visualize technology was used to detect pulsatility indexes (PI) and resistance indexes (RI) of fetal umbilical artery and middle cerebral artery in 95 normal late pregnancies and 52 PIH cases. The ratios of MCA - PI/UA - PI and MCA - RI/UA - RI were calculated. The mean value of these Doppler indexes were compared. Results UA - PI were significantly higher in PIH groups than that of normal groups ( P < 0.01) . UA - RI showed no significant differences in two groups (P>0.05) . MCA -PI and MCA-RI were significantly lower just in severe PIH groups than that of normal groups (P<0.01) . MCA - PI/UA- PI and MCA- RI/UA- RI ratio were significantly lower in PIH than that of normal groups (P<0.01) .Inse-vere PIH groups, MCA PI/UA PI<1, MCA - RI/UA - RI < 1. For predicting perinatal outcome , MC - PI/UA - PI had the best sensitivity (88.89%), specificity (97.06%), positive predictive value (94.12%) and negative predictive value (94.28%) .The diagnosis index was the best (0.86), and there were significant differences than single vessels.Conclution The regularity of hemodynamic changes from fetal placental circulation was opposite to fetal brain circulation in PIH. Taking both banding together, there were important practical values in the assessment of PIH and perinatal outcome.

目的探讨妊娠高血压综合征(PHI)患者胎儿脐动脉(UA)及大脑中动脉(MCA)的血流动力学变化规律,评价彩色多普勒血流显像技术在PIH上的利用价值。方法 应用彩色多普勒血流显像术检测95例正常晚期妊娠和52例PHI患者胎儿UA的搏动指数(PI)、阻力指数(RI)及MCA的搏动指数(PI)、阻力指数(RI),计算MCA—PI/UA—PI、MCA—RI/UA—RI的比值,均取平均值比较。结果PIH组与正常组UA—PI值比较有明显增高(P<0.01),而UA—RI值二组比较差异无显著性(P>0.05);MCA—PI值与MCA—RI值仅在重度PIH组与正常组间比较有显著降低(P<0.01);MCA—PI/UA—PI及MCA—RI/UA—RI的比值与正常组比较均有明显降低(P<0.01);重度PIH组MCA—PI/UA—PI及MCA—RI/UA—RI的比值二者均小于1。预测围产儿结局方面,MCA—PI/UA—PI具有高的敏感性(88.89%)、特异性(97.06%)、阳性预测值(94.12%)及阴性预测值(94.28%),其诊断指数最高为0.86,且与单一血管比较差异有显著性(P<0.01)。结论妊高征患者胎儿的胎盘循...

目的探讨妊娠高血压综合征(PHI)患者胎儿脐动脉(UA)及大脑中动脉(MCA)的血流动力学变化规律,评价彩色多普勒血流显像技术在PIH上的利用价值。方法 应用彩色多普勒血流显像术检测95例正常晚期妊娠和52例PHI患者胎儿UA的搏动指数(PI)、阻力指数(RI)及MCA的搏动指数(PI)、阻力指数(RI),计算MCA—PI/UA—PI、MCA—RI/UA—RI的比值,均取平均值比较。结果PIH组与正常组UA—PI值比较有明显增高(P<0.01),而UA—RI值二组比较差异无显著性(P>0.05);MCA—PI值与MCA—RI值仅在重度PIH组与正常组间比较有显著降低(P<0.01);MCA—PI/UA—PI及MCA—RI/UA—RI的比值与正常组比较均有明显降低(P<0.01);重度PIH组MCA—PI/UA—PI及MCA—RI/UA—RI的比值二者均小于1。预测围产儿结局方面,MCA—PI/UA—PI具有高的敏感性(88.89%)、特异性(97.06%)、阳性预测值(94.12%)及阴性预测值(94.28%),其诊断指数最高为0.86,且与单一血管比较差异有显著性(P<0.01)。结论妊高征患者胎儿的胎盘循环与颅脑循环的血流动力学变化规律不一致,二者结合在预测妊高征病情发展程度和预测围产儿结局方面有重要的临床价值。

 
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