液压传动中的CAD技术

论述了ＣＡＤ技术在液压传动中的应用，将流体力学计算、液压元件选取、计算等功能集成于一ＣＡＤ软件系统中，并自动绘制出液压系统图。实现液压传动工程高效、高质及信息化。     

计算机辅助检验规程设计（CAIP）的研究与实现──符号信息与几何信息的过渡和集成

着重介绍了计算机辅助检验规程设计（ＣＡＩＰ）系统第二部分的开发方案、实现特色和使用优势。ＣＡＩＰ系统是ＣＡＱ与ＣＡＤ、ＣＡＰＰ、ＣＡＭ集成的纽带，该智能系统的实现融汇了面向对象、信息集成、专家系统、关系数据库管理系统、图形系统等多种技术。本文所述＂检验指导图生成＂部分，将ＣＡＱ与ＣＩＭＳ集成信息以图形方式直观地显示出来，是ＣＡＩＰ不可缺少的部分。     

阀门产品CAD系统CAVDS的研究

应用参数化和复杂曲面造型设计方法，在大型ＣＡＤ软件ＥＵＣＬＩＤ上用二次开发语言研制了阀门产品ＣＡＤ系统ＣＡＶＤＳＤ。详细介绍了系统开发平台及结构、设计方法和开发中的一些技术问题。     

计算机辅助检验规程设计的研究与实现——符号信息与几何信息的过渡…

着重介绍了计算机辅助检验规程设计系统第二部分的开发方案，实现特色和使用优势。ＣＡＩＰ是ＣＡＱ和ＣＡＱ与ＣＡＤ、ＣＡＰＰ、ＣＡＭ集成的纽带，该智能系统的实现融汇了面向对象，信息集成，专家系统，关系数据库管理系统、图形系统等多种技术。本文所述“检验指导图生成”部分，将ＣＡＱ与ＣＩＭＳ集成信息以图形方式直观地显示出来，是ＣＡＩＰ不可缺少的部分。     

CIMS环境下一种飞机结构件知识基CAPP系统FA—CAPP

介绍了８６３计划ＣＩＭＳ重点应用工程－－成都飞机工业公司ＣＩＭＳ环境下的飞机结构件知识基ＣＡＰＰ系统－－ＦＡ－ＣＡＰＰ系统的主要功能，重点讨论了在飞机结构件集成化知识基ＣＡＰＰ的研究与开发方面所取得的研究和应用成果，包括ＣＡＤ／ＣＡＰＰ／ＣＡＭ的集成，特征基工艺决策，专家系统技术的应用、知识库技术的应用、工序图的生成与编辑、基于数据库的工艺过程信息共享等。     

CIMS环境下一种飞机结构件知识基CAPP系统FA－CAPP

介绍了８６３计划ＣＩＭＳ重点应用工程──成都飞机工业公司ＣＩＭＳ环境下的飞机结构件知识基ＣＡＰＰ系统──ＦＡ－ＣＡＰＰ系统的主要功能，重点讨论了在飞机结构件集成化知识基ＣＡＰＰ的研究与开发方面所取得的研究和应用成果，包括ＣＡＤ／ＣＡＰＰ／ＣＡＭ的集成、特征基工艺决策、专家系统技术的应用、知识库技术的应用、工序图的生成与编辑、基于数据库的工艺过程信息共享等。     

AutoLISP在SY—H—CAPP工序图自动绘制中的应用

本文根据我们在开发ＳＹ－Ｈ－ＣＡＰＰ工序图绘制软件过程中的体会和经验，就应用ＡｕｔｏＣＡＤ及ＡｕｔｏＬＩＳＰ实现ＣＡＰＰ工序图自动绘制的方法，作此论述和探讨。     

CAD技术在连杆锻件毛坯计算中的应用

针对连杆锻件毛坯的截面积计算，直径图绘制以及毛坯体积和重量的计算，基于ＡｕｔｏＣＡＤＲ１２．０软件的高级扩展造型模块ＡＭＥ，开发了一个交互的处理程序，并将此程序集成于ＡｕｔｏＣＡＤ系统中。文中对其实现的方法、价值及关键技术进行了的论述，并举例说明。     

用CAGD技术进行有限元前处理

本文介绍了用ＣＡＧＤ技术进行有限元前处理的设计要点。这种前处理包括用ＣＡＤ软件形成有限元单元图和用ＣＡＧＤ技术实现单元图的数值化处理。它避免了大量的有限元数据准备和输入工作，具有广泛的实用价值。     

FPDB——参量图生成的特殊方法

ＣＡＤ系统中，解决图形生成的参量化问题是推动我国ＣＡＤ技术的应用与发展的主要问题之一。本文介绍了一种特征参量数据库的建立。探讨一种图形参量化生成的积极的，有效的方法。对于寻求图形参量化生成的最佳途径具有现实的意义。     

Insertion of triangulated surfaces into a meccano tetrahedral discretization by means of mesh refinement and optimization procedures

In this paper, we present a new method for inserting several triangulated surfaces into an existing tetrahedral mesh generated by the meccano method. The result is a conformal mesh where each inserted surface is approximated by a set of faces of the final tetrahedral mesh. First, the tetrahedral mesh is refined around the inserted surfaces to capture their geometric features. Second, each immersed surface is approximated by a set of faces from the tetrahedral mesh. Third, following a novel approach, the nodes of the approximated surfaces are mapped to the corresponding immersed surface. Fourth, we untangle and smooth the mesh by optimizing a regularized shape distortion measure for tetrahedral elements in which we move all the nodes of the mesh, restricting the movement of the edge and surface nodes along the corresponding entity they belong to. The refining process allows approximating the immersed surface for any initial meccano tetrahedral mesh. Moreover, the proposed projection method avoids computational expensive geometric projections. Finally, the applied simultaneous untangling and smoothing process delivers a high‐quality mesh and ensures that the immersed surfaces are interpolated. Several examples are presented to assess the properties of the proposed method.     

The Research of Anti-Wear Properties of Organomolybdenum Compounds in the Engine Oils

A four-ball tester was used to evaluate the anti-wear performance of three kinds of organomolybdemun compounds in the engine oils, i. e., molybdenum dialkyldithiophosphate (MoDDP), molybdenum dialkyldithiocarbamate ( MoDTC), and sulphur and phosphorus freeorganomolybdeum (Molybdate). The results indicate that a low concentration of MoDDP doesn' t improve the anti-wear properties of the commercial engine oils, but a high concentration of MoDDP can obviously improve the anti-wear properties and the load-carrying capacity of the engine oils. MoDTC doesn' t improve the antiwear properties of the engine oils, but worsens the anti-wear properties of the oils. Signifi can timprove ment of frictional and wear characteristics is obtained with Molybdate added in the commercial engine oils and the formulated oils.     

Certification Institutions Expected to Update and Transfer Information on Present Standards

Standards are the basis for production enterprises to organize production, ex-factory inspection, trade (delivery) and technical exchanges, product certification, quality arbitration and supervision.……     

Flow calorimeter for enthalpy increment measurements on condensed gases

A flow calorimeter for enthalpy increment measurements on condensed gases is presented. A better knowledge of the properties of the liquefied natural gas is needed, and therefore a liquid loop has been designed for our flow calorimeter. The fluid loop in the calorimeter is designed in order to avoid the two-phase region, since two phases would give compositional disturbances in the measurements. The avoidance of the two-phase region is made possible by increasing the pressure of the test fluid after the measurement section, then heating the fluid at super-critical pressure past the critical point. Finally, the fluid is throttled to the low-pressure gas state at the inlet condition of the compressor that circulates the fluid. To perform the pressure increase, a new cryogenic pump has been designed. To evaluate the new equipment, measurements were taken on liquid ethane over the temperature range 146–256 K at pressure between 0.9 and 5.1 MPa.     

Certification Becomes Important for the I Quality; and Safety Supervision of the Chinese Liquor Sector

The end of 2007, over 200 unit products of more than 80 Chinese firms have passed the quality grade certification for liquor products. These products involve distilled spirits, beer, wine, yellow wine, fruit syrup wine and others, and cover over 80% of the national top-branded liquor products.……     

Deposition and Coating Properties on CVD Tungsten

Surface characterization and microstructure studies are performed on chemical vapor deposited (CVD) tungsten coating. There is about 2 μm thickness diffusion layer of tungsten in the molybdenum substrate. The thermal shock test shows tungsten coating has good adhesion with molybdenum substrate, but the elements of oxygen and carbon in the tungsten coating have the bad affection to the adhesion. The result of high-temperature diffusion experiment is the diffusion rate from molybdenum substrate to tungsten coating is faster.     

Refrigerators Enter a New Era of Health Preservation Frestech initiates the establishment of China's first standard for household sterilization refrigerators

On November 30, 2007, the China Association for Standardization (CAS) held a press conference at Beijing Diaoyutai State Guest House. Leaders from the China Household Electric Appliance Research Institute, the China Household Electric Appliance Association, and the China Consumers' Association attended and made speeches.……     

Analysis of marine hydrobiont lipid extracts as possible cryoprotective agents

We studied a combined effect of the cryoprotectants both of lipid and carbohydrate origin at the presence of DMSO or without it on cell viability and the RNA synthesis in the embryonic mollusc and echinoderm cell cultures obtained at different developmental stages. Cryoprotective properties of exogenous lipids correlated with their thermotropic behavior. Lipid extracts from marine hydrobiontes, which thermal transitions are characterized by relatively small part of calorimetric thermogram area lying at temperatures above 0 °C (6–18%), were found to possess a considerable cryoprotective activity. The results are discussed in relation to the prediction of the cryoprotective activity of lipid extracts for marine animal cells. In addition, it was found that marine invertebrate cells can be cryopreserved without DMSO at the presence of trehalose and lipid extracts of some marine hydrobiontes.     

Low-Temperature Properties of Silver

Pure silver is used extensively in the preparation of high-temperature superconductor wires, tapes, films, and other configurations in which the silver not only shields the superconducting material from the surrounding materials, but also provides a degree of flexibility and strain relief, as well as stabilization and low-resistance electrical contact. Silver is relatively expensive, but at this stage of superconductor development, its unique combination of properties seems to offer the only reasonable means of achieving usable lengths of conductor. In this role, the low-temperature physical (electrical, thermal, magnetic, optical) and mechanical properties of the silver all become important. Here we present a collection of properties data extracted from the cryogenic literature and, to the extent possible, selected for reliability.