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DUALITY FOR MULTIOBJECTIVE FRACTIONAL PROGRAMMING INVOLVING n-SET FUNCTIONS
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作者 陈世国 刘家学 《Acta Mathematica Scientia》 SCIE CSCD 1998年第S1期36-42,共7页
In this paper, two duality results are established under generalized ρ-convexity conditions for a class of multiobjective fractional programmign involvign differentiable n-sten functions.
关键词 n-set functions ρ-convexity strictly quasiconvex multiobjective fractional programming DUALITY
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Multiobjective Program with Support Functions Under(G, C, ρ)-Convexity Assumptions
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作者 YUAN Dehui LIU Xiaoling 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2015年第5期1148-1163,共16页
This paper deals with multiobjective programming problems with support functions under (G, C, ρ)-convexity assumptions. Not only sufficient but also necessary optimality conditions for this kind of multiobjective p... This paper deals with multiobjective programming problems with support functions under (G, C, ρ)-convexity assumptions. Not only sufficient but also necessary optimality conditions for this kind of multiobjective programming problems are established from a viewpoint of (G, C, ρ)-convexity. When the sufficient conditions are utilized, the corresponding duality theorems are derived for general Mond-Weir type dual program. 展开更多
关键词 (G C ρ)-convex G-duality theory G-necessary conditions G-sufficient conditions mul-tiobjective program
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基于Pro/FamilyTable和Pro/Program三维冲压模标准模架库的建立 被引量:7
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作者 陈勇 苏文斌 《机电工程技术》 2004年第5期27-28,33,共3页
本文介绍了Pro/E的二次开发技术---FamilyTable和Pro/Program的特点,在此基础上,通过三维冲压模标准模架库的建立过程,说明了建立三维标准化组件库的通用方法,为建立三维标准化组件库提供了一定的思路。
关键词 PRO/e 二次开发 FAMILY Tablle PRO/program 三维标准件库
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基于Pro/E的Layout和Program注塑模模架设计
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作者 胡光明 《模具技术》 2012年第1期49-53,共5页
针对注塑模模架的自行设计、自动化更改和自动化装配问题,结合Pro/Engi-neer软件,采用Layout和Program 2种方法实现注塑模模架的参数化设计。模架系统完全开放,做适当更改可快速变形、自由转换。设计的模架操作简便、易于修改和添加新... 针对注塑模模架的自行设计、自动化更改和自动化装配问题,结合Pro/Engi-neer软件,采用Layout和Program 2种方法实现注塑模模架的参数化设计。模架系统完全开放,做适当更改可快速变形、自由转换。设计的模架操作简便、易于修改和添加新零件。 展开更多
关键词 PRO/e Layout program 模架
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血清PDCD4、ZEB1、G-17联合检测对早期胃癌的诊断价值 被引量:2
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作者 杨小云 陈燕萍 +3 位作者 胡益冰 朱莎 钱璐珈 丁进 《局解手术学杂志》 2023年第4期323-327,共5页
目的探究血清程序性细胞死亡因子4(PDCD4)、E盒结合锌指蛋白1(ZEB1)、胃泌素-17(G-17)联合检测对早期胃癌(GC)的诊断价值。方法将本院收治的136例GC患者、82例萎缩性胃炎患者分别设为GC组、萎缩性胃炎组,另选取同期136例体检健康者设为... 目的探究血清程序性细胞死亡因子4(PDCD4)、E盒结合锌指蛋白1(ZEB1)、胃泌素-17(G-17)联合检测对早期胃癌(GC)的诊断价值。方法将本院收治的136例GC患者、82例萎缩性胃炎患者分别设为GC组、萎缩性胃炎组,另选取同期136例体检健康者设为对照组。比较各组血清PDCD4 mRNA、ZEB1 mRNA及G-17、糖类抗原19-9(CA19-9)、癌胚抗原(CEA)水平。根据GC患者病情进展程度将其分为早期GC组(80例)和进展期GC组(56例),比较早期GC组、进展期GC组患者血清PDCD4 mRNA、ZEB1 mRNA及G-17、CA19-9、CEA水平;分析血清PDCD4 mRNA、ZEB1 mRNA、G-17、CA19-9、CEA单独或联合检测对早期GC的诊断价值。结果与对照组相比,萎缩性胃炎组、GC组患者血清PDCD4 mRNA表达水平降低(P<0.05),ZEB1 mRNA、G-17水平升高(P<0.05);与萎缩性胃炎组相比,GC组患者血清PDCD4 mRNA表达水平降低(P<0.05),ZEB1 mRNA、G-17、CA19-9、CEA水平升高(P<0.05)。进展期GC组患者血清PDCD4 mRNA表达水平低于早期GC组(P<0.05),ZEB1 mRNA、G-17、CA19-9、CEA水平高于早期GC组(P<0.05)。血清PDCD4、ZEB1、G-17联合诊断早期GC的曲线下面积(AUC)为0.946,高于三者单独诊断及CA19-9、CEA(P<0.05),联合诊断的灵敏度为86.25%,特异度为94.64%,诊断价值最高。结论GC患者血清PDCD4 mRNA表达水平较低,ZEB1 mRNA、G-17水平较高,血清PDCD4、ZEB1、G-17均可辅助诊断早期GC,且三者联合检测可能更有益于临床筛查早期GC。 展开更多
关键词 程序性细胞死亡因子4 胃泌素-17 e盒结合锌指蛋白1 早期胃癌 诊断
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Pro/Engineer二次开发工具program的应用研究 被引量:4
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作者 王剑 骆清国 《现代机械》 2004年第3期13-14,17,共3页
介绍了PRO/E二次开发工具program结构功能 ,并通过实例对其应用进行研究。
关键词 PRO/e 二次开发 program CAD 标准件 机械设计
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Pro/Toolkit结合Pro/Program进行Pro/E二次开发的方法 被引量:1
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作者 葛加来 《机电信息》 2012年第12期146-147,共2页
Pro/E是当前主流CAD三维设计软件之一,Pro/Toolkit是Pro/E自身提供的二次开发工具包,但仅用Pro/Toolkit进行Pro/E二次开发编程工作量大且效率低。对采用Pro/Toolkit结合Pro/Program进行Pro/E二次开发的主要方法进行阐述,介绍了结合Pro/P... Pro/E是当前主流CAD三维设计软件之一,Pro/Toolkit是Pro/E自身提供的二次开发工具包,但仅用Pro/Toolkit进行Pro/E二次开发编程工作量大且效率低。对采用Pro/Toolkit结合Pro/Program进行Pro/E二次开发的主要方法进行阐述,介绍了结合Pro/Program创建基本模型的一般方法,并详细论述了通过Pro/Toolkit调用Pro/Program参数来驱动模型以提高Pro/E二次开发效率的方法。 展开更多
关键词 PRO/e PRO/TOOLKIT PRO/program PRO/e二次开发
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Scientific Progress in China's Lunar Exploration Program 被引量:1
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作者 XU Lin OUYANG Ziyuan 《空间科学学报》 CAS CSCD 北大核心 2014年第5期525-534,共10页
Chang'E-1, the first lunar mission in China, was successfully launched on October 24,2007, which opened the prelude of China's Lunar Exploration Program. Later on, the Chang'E-2 and Chang'E-3 satellite... Chang'E-1, the first lunar mission in China, was successfully launched on October 24,2007, which opened the prelude of China's Lunar Exploration Program. Later on, the Chang'E-2 and Chang'E-3 satellites were successfully launched in 2010 and 2013, respectively. In order to achieve the science objectives, various payloads boarded the spacecraft. The scientific data from these instruments were received by Beijing and Kunming ground stations simultaneously. Up to now, about 5.628 Terabytes of raw data were received totally. A series of research results has been achieved. This paper presents a brief introduction to the main scientific results and latest progress from Chang'E-3 mission. 展开更多
关键词 China’s LUNAR exploration program Chang’e satellite SCIeNTIFIC ReSULT MOON
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G_(b)-(p,r)E-半预不变凸多目标规划的最优性条件 被引量:1
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作者 祁钰 高晓艳 《广西大学学报(自然科学版)》 CAS 北大核心 2023年第2期487-494,共8页
为了丰富广义凸函数类,扩大多目标规划的应用范围,运用Clark广义梯度,借助αE半预不变凸函数和G B(p,r,α)不变凸函数,进一步给出了一类新的广义凸函数的定义:G_(b)(p,r)E半预不变凸函数。对于涉及这类函数的多目标规划问题,得到了其可... 为了丰富广义凸函数类,扩大多目标规划的应用范围,运用Clark广义梯度,借助αE半预不变凸函数和G B(p,r,α)不变凸函数,进一步给出了一类新的广义凸函数的定义:G_(b)(p,r)E半预不变凸函数。对于涉及这类函数的多目标规划问题,得到了其可行解是弱有效解的若干最优性条件。 展开更多
关键词 G_(b)(p r)e半预不变凸函数 最优性条件 多目标规划 弱有效解
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Soluble programmed death-1 is predictive of hepatitis B surface antigen loss in chronic hepatitis B patients after antiviral treatment
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作者 Ning Tan Hao Luo +7 位作者 Qian Kang Jia-Li Pan Ran Cheng Hong-Li Xi Hong-Yu Chen Yi-Fan Han Yu-Ping yang Xiao-Yuan Xu 《World Journal of Clinical Cases》 SCIE 2021年第21期5812-5821,共10页
BACKGROUND Hepatitis B surface antigen(HBsAg)loss,a functional cure in patients with chronic hepatitis B(CHB)undergoing antiviral therapy,might be an ideal endpoint of antiviral treatment in clinical practice.The fact... BACKGROUND Hepatitis B surface antigen(HBsAg)loss,a functional cure in patients with chronic hepatitis B(CHB)undergoing antiviral therapy,might be an ideal endpoint of antiviral treatment in clinical practice.The factors that contribute to the functional cure remain unclear,and the predictors of functional cure are worth exploring.The concentration and kinetics of soluble programmed death-1(sPD-1)in patients with CHB may play an important role in elucidating the immune response associated with functional cure after nucleos(t)ide analogs therapy.AIM To investigate the factors associated with HBsAg loss and explore the influence of sPD-1 Levels.METHODS This study analyzed the data and samples from patients with CHB who underwent antiviral treatment in a non-interventional observational study conducted at Peking University First Hospital in Beijing(between 2007 and 2019).All patients were followed up:Serum samples were collected every 3 mo during the first year of antiviral treatment and every 6 mo thereafter.Patients with positive hepatitis B e antigen levels at baseline and with available sequential samples who achieved HBsAg loss during antiviral treatment served as the case group.This case group(n=11)was further matched to 44 positive hepatitis B e anti patients without HBsAg loss as controls.The Spearman’s rank correlation test and receiver operating characteristic curves analysis were performed.RESULTS The sPD-1 Levels were higher in patients with HBsAg loss than in those without HBsAg loss from baseline to month 96,and the differences were significant between the groups at baseline(P=0.0136),months 6(P=0.0003),12(P<0.0001),24(P=0.0007),48(P<0.0001),and 96(P=0.0142).After 6 mo of antiviral treatment,the sPD-1 levels were positively correlated with alanine transaminase(ALT)levels(r=0.5103,P=0.0017),and the sPD-1 levels showed apparent correlation with ALT(r=0.6883,P=0.0192)and HBV DNA(r=0.5601,P=0.0703)levels in patients with HBsAg loss.After 12 mo of antiviral treatment,the sPD-1 levels also showed apparent correlation with ALT(r=0.8134,P=0.0042)and HBV DNA(r=0.6832,P=0.0205)levels in patients with HBsAg loss.The sPD-1 levels were negatively correlated with HBsAg levels in all patients after 12 mo of antiviral treatment,especially at 24(r=-0.356,P=0.0497)and 48(r=-0.4783,P=0.0037)mo.After 6 mo of antiviral treatment,the AUC of sPD-1 for HBsAg loss was 0.898(P=0.000),whereas that of HBsAg was 0.617(P=0.419).The cut-off value of sPD-1 was set at 2.34 log pg/mL;the sensitivity and specificity were 100%and 66.7%,respectively.CONCLUSION The sPD-1 levels at 6 mo can predict HBsAg loss after 144 mo of antiviral treatment. 展开更多
关键词 programmed cell death 1 protein Hepatitis B surface antigen Chronic hepatitis B ANTIVIRAL Nucleos(t)ide analogs Hepatitis B e antigen
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Efficacy and Usability of an E-Learning Program for Fostering Qualified Disease Management Nurses
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作者 Kana Kazawa Michiko Moriyama +3 位作者 Michiyo Oka Satsuki Takahashi Madoka Kawai Masumi Nakano 《Health》 2015年第8期955-964,共10页
In order to train nurses to perform disease management and telenursing, we developed an e-learning education program, and assessed the efficacy. A single-group pre-test and post-test design was used. Nurses who worked... In order to train nurses to perform disease management and telenursing, we developed an e-learning education program, and assessed the efficacy. A single-group pre-test and post-test design was used. Nurses who worked at a medical institution or a disease management company were included, and the duration of the program was set 2 months. We developed the program so that it could grow attitude and improve knowledge and skills in disease management and patient education. Of 55 subjects, 48 who completed the program were analyzed. After the program, subjects increased knowledge and interests in disease management and patient education. Almost of the subjects answered that e-learning was a good learning method. Our program was effective at enhancing subject’s interests in disease management and patient education, and considered to improve their skills in the future. 展开更多
关键词 e-LeARNING education program Disease Management TeLeNURSING
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Exploration on 5E Teaching Principle-based Education for the Object-oriented Software Construction Course
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作者 Cuiyun Gao Jia Xie +3 位作者 Bin Zhou Jianghong Ma Jianlong Wu Yunming Ye 《计算机教育》 2023年第12期187-194,共8页
Most current object-oriented programming courses offered by domestic colleges and universities generally focus on the object-oriented programming language itself,i.e.,the programming grammar of the language,but ignore... Most current object-oriented programming courses offered by domestic colleges and universities generally focus on the object-oriented programming language itself,i.e.,the programming grammar of the language,but ignore the design pattern.However,design patterns are essential to software engineering because they can solve common problems in software design and improve code reuse,readability,extensibility,and reliability.Our Object-oriented Software Construction Course is creative since it aims at cultivating students’object-oriented thinking as well as basic abilities required to construct high-quality,object-oriented software.Specifically,we exploit the 5E teaching principle during the education of this course,and present the whole pipeline in the paper.We also provide one case of the factory pattern to further demonstrate the implementation of the 5E teaching principle in the course.The effect of the 5E teaching principle has also been demonstrated. 展开更多
关键词 Object-oriented software construction 5e teaching principle programming Design pattern
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The Role of Blockchain in E-Governance and Decision-Making in Project and Program Management
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作者 Mounir El Khatib Asma Al Mulla Wadha Al Ketbi 《Advances in Internet of Things》 2022年第3期88-109,共22页
This paper discusses the impact of e-governance powered by blockchain in the project and program management industry. With the rise in technological innovations, many countries have turned to e-governance for efficien... This paper discusses the impact of e-governance powered by blockchain in the project and program management industry. With the rise in technological innovations, many countries have turned to e-governance for efficiency in service delivery, transparency, and decision-making. E-governance backed by blockchain technology entails improving the public services provision by implementing structures of information and communication technologies. There are many challenges with the traditional project management approach that causes organizations and its stakeholders’ cost and time. Thus, the introduction of blockchain has given many organizations a new approach to adopt in order to eliminate the challenges associated with the typical project management approach. In spite of the cutting-edge technology of blockchain and its broad applications in program management and e-governance, there are still many challenges that restrain its adoption on a broader scale. The research discusses the challenges of the blockchain deployment in the program management field and e-governance in private and government sectors and it highlights the efforts put by both sectors to make use of the technology. Also, the research covers the opportunities and the advantages of a blockchain adoption in various segments. The paper uses various case studies in the UAE, in both private and government sectors, and a qualitative research approach was implemented. The case studies were on government entities such as Smart Dubai and the Ministry of Health Prevention and also private entities like DP World and Emirates NBD. The paper concludes with recommendations and solutions on how to maximize the benefit of blockchain in the program management industry and how it is improving the decision-making process. 展开更多
关键词 Project Management program Management Blockchain e-GOVeRNANCe Decision Making
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生鲜电商前置仓选址因素分析与模型构建研究
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作者 梁力军 王晨 袁苗苗 《物流科技》 2024年第3期50-54,共5页
前置仓作为生鲜电商企业满足顾客多样化需求的一种新型仓配模式,如选址不合理会导致配送成本过高、生鲜质量降低和时效性不足。如何进行合理选址和评估其各类成本收益,备受学术界关注。通过构建中心仓、前置仓以及需求点的三级网络模型... 前置仓作为生鲜电商企业满足顾客多样化需求的一种新型仓配模式,如选址不合理会导致配送成本过高、生鲜质量降低和时效性不足。如何进行合理选址和评估其各类成本收益,备受学术界关注。通过构建中心仓、前置仓以及需求点的三级网络模型,利用混合整数线性规划,并考虑了运输成本、运营成本、制冷成本以及货损成本,构建以综合总成本最小为目标函数的数学模型,再结合0~1变量的参数约束,借助善于解决线性规划问题的LINGO软件解决网络中前置仓的选址问题,并用郑州市中牟县的相关数据进行实例分析与计算。通过研究发现,前置仓建模中需要考虑的项目为运输成本和履约成本。期望为生鲜电商前置仓选址研究提供更优的前置仓选址模型。 展开更多
关键词 前置仓选址 生鲜前置仓 生鲜电商 整数规划 LINGO软件
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ASP.NET技术在电子商务系统中的应用研究 被引量:25
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作者 王志晓 张景 +2 位作者 李军怀 王锋 侯浩录 《计算机工程》 CAS CSCD 北大核心 2003年第18期74-76,共3页
分析了ASP技术在电子商务系统开发中存在的问题,讨论了ASP.NET技术的体系结构,并提出了基于ASP.NET技术的电子商务的实现框架,最后深入探讨了如何利用ASP.NET技术实现数据库访问,以及从验证、授权和扮演3个层次提高系统安全性能的... 分析了ASP技术在电子商务系统开发中存在的问题,讨论了ASP.NET技术的体系结构,并提出了基于ASP.NET技术的电子商务的实现框架,最后深入探讨了如何利用ASP.NET技术实现数据库访问,以及从验证、授权和扮演3个层次提高系统安全性能的技术和方法。 展开更多
关键词 ASP.NeT WeB应用程序 电子商务 数据库 安全
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基于Pro/E平台上的双圆弧齿轮的参数化设计 被引量:2
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作者 宋胜伟 刘成柱 李占奎 《现代制造工程》 CSCD 2007年第4期51-53,共3页
双圆弧齿轮是一种具有凹凸齿廓啮合的高效齿轮,其优点是承载能力高,制造工艺简单,成本低。利用Pro/E中的Program编程,以实现对双圆弧齿轮的参数化设计,为双圆弧齿轮的进一步研究打下基础。
关键词 双圆弧齿轮 PRO/e program模块 参数化设计
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基于Pro/E的直齿圆柱内齿轮的参数化设计 被引量:8
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作者 唐虹 乔立明 《石油矿场机械》 2008年第2期46-48,共3页
以Pro/E Wildfire2.0为开发平台,以直齿圆柱内齿轮为研究对象,利用关系式约束的空间曲线,以拉伸、镜像及阵列等方法创建直齿圆柱内齿轮实体。并以Pro/program模块为开发工具,进行圆柱内齿轮三维参数化程序设计,用户可根据人机交互界面... 以Pro/E Wildfire2.0为开发平台,以直齿圆柱内齿轮为研究对象,利用关系式约束的空间曲线,以拉伸、镜像及阵列等方法创建直齿圆柱内齿轮实体。并以Pro/program模块为开发工具,进行圆柱内齿轮三维参数化程序设计,用户可根据人机交互界面的提示,输入相关参数,即可自动生成圆柱齿轮的三维实体,从而缩短产品开发周期,提高设计效率。 展开更多
关键词 PRO/e 内齿轮 参数化设计 PRO/program
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基于Pro/E的3D齿轮模型自动设计 被引量:12
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作者 张学伟 葛江华 徐克生 《林业机械与木工设备》 北大核心 2002年第7期16-18,共3页
介绍了利用Pro/E的Program进行齿轮模型设计的方法,只要输入齿轮设计的已知条件,如齿数、模数、压力角、变位系数等,PrO/E系统即可自动创建出齿轮的零件模型。
关键词 PRO/e 齿轮模型 自动设计 program
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关于E-凸函数及E-凸规划几个错误结论的修正 被引量:7
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作者 覃义 简金宝 《数学杂志》 CSCD 北大核心 2006年第2期177-180,共4页
本文研究Youness在1999年建立的有关E凸函数和E规划的结论.利用E凸函数和E凸规划的基本性质和优化分析技术,获得了有关E凸函数E凸规划的几个错误结论的修正..
关键词 e-凸集 e-凸函数 e-凸规划 广义凸性
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基于Pro/E二次开发的齿轮参数化模型库的实现 被引量:7
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作者 吴卓 赵国霞 丁志磊 《机电产品开发与创新》 2006年第3期94-96,共3页
介绍了Pro/E参数化设计的基本原理和基于Pro/Program二次开发实现参数化建库的方法,并以渐开线齿轮为例,详细阐述了基于Pro/Program二次开发参数化程序设计的实现过程。
关键词 PRO/e 参数化设计 PRO/program 齿轮
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