查询词典 aeronautics

At last, this paper brings out the module of Product Structure and Configuration Management of PDM in Aeronautics Astronautics Developing Electronic Information Integration Corporation.

并且，在南航新兴信息集成软件公司的PDM系统开发中，实现了产品结构与配置管理模块。

Micro-Turbo-Engine Design and Test Research Group of Beijing University of Aeronautics and Astronautics, Headway of China Self-Authorized Design Research of Micro-Turbojet Engine, Journal of Aeroengine, Vol.

北京航空航天大学微型涡轮发动机设计与试制研究组，中国自主设计的微型涡喷发动机的研制进展，简报，航空发动机，32卷1期，2006年3月。

Smart composites and structures, which possesses the characteristics of self-recognition, self-judgment and adaptive action etc., have imposed immense impacts on Aeronautics and astronautics, navigation, medicine, building, civil engineering etc.

复合材料智能结构具有自判断性、自适应性、自诊断性和自修复性等诸多功能而引起航空航天、航海、医学和土木工程及民用建筑等领域的广泛重视。

It is time for the first living Cultural Festival of the aeronautics city, western China, in order to thanks for your longtime support to our Luxehills Property Management Co., Ltd and Wide Horizon, we bought some tickets specially for you. Every family can get 2 tickets, because the tickets are limited, please go to the customer center or the seneschal to apply, the earlier the better. The ones who apply early can get the chance to enjoy the party.

为了答谢阁下对麓山物业以及万华房地产长期以来的大力支持，值此首届中国西部航都居住文化节之际，麓山物业和万华房地产公司特为麓山国际社区业主购买了少许门票，请阁下尽快向麓山物业客服中心或组团管家处报名，每户仅限2名，先报先得。

The main jobs of this paper are as followed: 1 The reuse of the frame design technology for aircraft assembly fixtures is researched. a frame line part library is built with the templet driven technology, the reuse of the frame line part come true by the tools for instantiation and instance modification. The design resources are effectively used, some repeating work is cut. 2 Two methods to obtain the assembly feature are proposed: the straight way by the Enumeration method and the indirect way by project features to the assembly plane. All of the assembly features of the frame and the adjustable bearings are obtained by these two methods which makes the frame automatic assembly technology for aircraft assembly fixtures come true. 3 The frame automatic assembly technology aircraft assembly fixtures based on assembly features is researched. A binary tree assembly model is used to express the assembly information of the frame for aircraft assembly fixtures, the automatic assembly between the frame, the aircraft and the adjustable bearing is completed within the three steps: distribute, obtain and evaluate assembly feature. Finally, the efficiency of the frame assembly design is proved. 4The frame interpart modeling technology for aircraft assembly fixtures is researched, the intersection methods are concluded and the arithmetic of the single-cut, double-cut and inter-cut intersection is proposed, the interpart fast modeling of the frame design for aircraft assembly fixture come true. 5Based on the researches mentioned before, a sub-system of frame fast design for aircraft assembly fixture is developed on CATIA. The sub-system is used to design the aircraft assembly fixtures in a large aeronautics corporation and make a good- effect.

论文的主要工作如下： 1研究了飞机装配型架骨架设计重用技术，在总结归纳骨架线框结构类型的基础上，应用模板驱动的方法建立了骨架线框库，通过骨架线框零件的实例化和离线编辑实现骨架线框的重用，有效利用设计资源，减少重复劳动； 2提出穷举几何对象的装配特征直接获取方法，遍历零件模型的几何对象，从中捕捉所需装配特征，该方法简捷、高效；提出向装配面投影的装配特征间接获取方法，该方法在现有特征基础上生成装配特征，解决了部分装配特征难以直接获取的问题； 3研究了基于装配特征的飞机装配型架骨架自动装配技术，采用一种二叉树装配模型表达骨架的装配关系，并通过装配特征的分配、获取和赋值三个步骤，实现了骨架分别与飞机产品和可调支承的自动装配，避免了繁琐的人工交互操作，提高了骨架设计的效率和规范化程度； 4研究了飞机装配型架骨架零件间建模技术，在总结归纳骨架元件相贯处理方式的基础上，提出了骨架元件单剪切相贯、双剪切相贯和互剪切相贯的实现算法，简化了骨架相贯处理的过程； 5基于以上研究，在CATIA平台上开发了飞机装配型架骨架快速设计子系统，并应用于某大型航空企业的装配型架设计，提高了设计效率和设计质量。

By the United States National Aeronautics and Space Agency launched a far the world's largest space telescope.

由美国国家航空和宇航局发射的一个迄今世界最大的空间望远镜。

The Sputnik launch also led directly to the creation of National Aeronautics and Space Administration.

在发射人造卫星，也直接导致了创建国家航空和航天局。

We provide the corresponding products and service for the enterprises of aeronautics and astronautics, arms and ships, instruments and institutes both here and abroad, especially the unmarketable products which haven't been made or won't been made.

公司专为国内国际的航天航空，兵器船舶，仪器仪表，各研究所等企业提供配套产品和服务。特别是已经或即将停产的偏冷门的产品。

Advanced Aeronautics is the backbone of the Allied air force and the primary upgrade for the Vindicator Rush.

高级航空学是盟军空军的中枢同时是维护者快攻的基本升级。

With the calm, almost eerie self-assurance common among top pilots, Collins is an aeronautics wonk in khaki pants and beige pumps.

柯林斯具备一流飞行员中常见的沉着自信，这种自信几乎让人迷惑不解。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。