查询词典 cad

The HRV decreasing was correlated tightly with the degree of coronary artery stegnosis and the quantity of coronary artery involved in CAD patients, it indicated that myocardial. ischemia was important cause for HRV decreasing, and CAD severity could be predicted possibly with the Lower HRV.

冠心病患者，心率变异降低不仅与冠脉狭窄严重度有关，而且与冠脉病变的广泛程度有关，提示心肌缺血是冠心病患者HRV降低的重要因素，HRV降低程度对冠心病严重度可能有预测价值。

The system is designed according to the mechanism of CAD Standard Part Graphies Files. SQL Server 2000 is selected as the host and construct the database of part liabrary due to characteristic parameter. STEP, viz. ISO 10303, is issued by international standardization organization, and here ,this paper gives the definition of product information model oriented part41 and part44 in STEP and six basic definienses which describe the product information to ensure the information in the product information model correct and shareable . This paper also presents method of creating and extracting product information on engineering draught and product data exchange and integration between CAD system and database manager system.

论文中采用&CAD标准件图形文件机制&，用SQL Server2000数据库建立了零件的特征参数数据库，完成了零件库的特性参数库建库工作；依据国际标准化组织的STEP标准即ISO 10303中的Part41，Part44两部分内容以及STEP标准中描述产品信息的六个基本的类库定义，提出了一种产品信息模型，保证了产品信息模型中信息的正确性和共享性，实现了工程图样中产品管理信息的建立和提取以及数据库系统与图形文件中的管理信息交换与集成。

During the development of the CAD system of gear, this paper introduces expert knowledge into procedure of CAD and actualizes the intellectualization in design process, strength analysis.

在齿轮零件CAD系统开发过程中，结合专家系统，将专家知识融入在齿轮零件CAD过程中，实现了设计过程、强度分析的智能化。

Prevalence of plaques in thoracic and abdominal aortas was higher in patients with than without CAD (73% and 94% versus 32% and 79%), but it was similar in CAD patients with and without MI.

虽然冠心病患者胸、腹主动脉斑块的检出率均高于未患冠心病者（73%和94%比32%和79%），但在冠心病患者中有心肌梗死者与无心肌梗死者中2种斑块检出率相近。

On receipt of the CAD Form DCA35 and any supporting documentation,CAD must check the DCA35 for completeness and ensure that the experiene claimed meets the requirement of HKAR-66 and that the experience record satisfies para. 1.2 in terms of content and the countersigning signature.

CAD一收到申请者的已填好的表格DCA35及任何相关文件，就必须检查该表格是否完整，要保证其所声称的维修经验符合HKAR-66的要求，同时该经验的记录就其内容和连署签名方面必须满足1.2段的规定。

Results E-cad expression was observed in all paracancerous normal epitheliums,while positive rate of E.cad in CLI of all histological types was 55%.

选取60例原发性CLI组织及相应癌旁正常组织，用免疫组化SP法和抗E-cad抗体检测观察E-cad的表达。

The main innovation of this paper includes: 1 Applying the Object-Oriented technique to the Boiler Design System, a universal boiler CAD application software system is excogitated, gives a good demonstration for other factories to deepen CAD applications.

本文主要创新点包括：将面向对象的设计思想引入锅炉CAD系统，研究出CAD应用中兼顾通用性与专用性要求的软件系统，为其他CAD深化应用提供示范作用。

KBE is different from expert system, and overmatches the traditional CAD design strategy. It makes the CAD design process explicit as well as design results.

KBE有别于专家系统，又高于传统的CAD设计策略，它使得CAD的设计过程和设计结果都是显式的。

By the analysis of the characteristic and restriction of the gear components ,this paper upbuilds the characteristic model based on the restriction and actualizes data transmission and information sharing among CAD.CAE and CAPP .This paper analyzes the general principle of parameter determination and strength check about gear and researches the algorithmic of gear strength check based on the characteristic .This paper introduces expert knowledge into respective procedure of CAD.CAE and CAPP and actualizes the intellectualization in design process .strength analysis and process planning .

以齿轮类零件作为研究对象，在分析了其特征及约束的基础上，利用数据库技术和图形单元建模技术，建立了基于约束的特征模型，实现了CAD／CAE／CAPP之间的数据传输和信息共享；分析了齿轮参数确定、强度校核的一般原则，进行基于特征的齿轮强度校核的算法研究；将专家知识融入在CAD、CAE、CAPP各个过程中实现了设计过程、强度分析和工艺分析的智能化。

In order to assurance the maching accuracy and surface quality of steam turbine blades,based on typical CAD/CAM software Pro/Engineer 2.0,the flow diagram of parametric modeling and maching of turbine blades is drawn;The 3-D entity model of Steam Turbine Blade is upbuilt by parametric modeling method,and the fit-method with NURBS is extracted to smooth the curve surface,and the matrix expression of NURBS is deduced to make the surface more accurate;Then based on it's CAD model,the maching technology process...

为保证汽轮机叶片的加工精度和表面质量，以典型的CAD/CAM软件Pro /Engineer Widefire2.0中文版为基础，绘制了汽轮机叶片参数化设计加工的流程图；用参数化建模方法建立了叶片的三维实体模型，提出用NURBS曲线拟合方法进行光顺处理，并推导出NURBS的矩阵表达式便于截面型线的拟合，进而使叶片的造型更加精确；在CAD模型的基础上，分析了叶片的加工工艺流程，并用软件的CAM功能对叶片进行数控加工仿真，生成了NC代码。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？