飞机

3D model may be manipulated so that its shape could be observed from any view, and is displayed on the screen by static state and dynamic. The property of volume and the moment of inertia matrix are obtained from the octree of object by the algorithms presented in this dissertation. To fit the application of recognition, we studies the method by which 3D model octree is used for recognition.

作者研究了对重建飞机三维形体的旋转和操作，提出了飞机体积及惯性矩的计算算法，并利用计算机图形学技术，对重建的飞机三维形体进行了静态和动态显示，论文对重建的飞机三维模型用于识别的方法进行了探索性的研究。

ARJ21 is under designing and manufacturing in our country, and we will continue the research of big airplane for civil and military use, in order to pass the strict navigability validations. Anti-bird impact analysis can reduce the cost of experiments and improve the design efficiency.

我国正在开展民用支线飞机ARJ21的设计制造工作，未来也将开展大型军民用飞机的研发工作，为了通过严格的抗鸟撞设计适航性验证试验，预先进行飞机结构的抗鸟撞设计分析显得尤为必要，论文正是在这种基础下开展了飞机结构的抗鸟撞仿真设计研究工作。

Thunderstorm is a rapid development of severe convective weather, and even allows the aircraft to lose control; cloud of supercooled water droplets can lead to serious aircraft icing; hail can be damaged aircraft; Lightning radio compass and would interfere with communications equipment and destruction; lightning can damage the skin of aircraft.

雷雨是一种发展快速的强对流性天气，甚至可使飞机失去控制；云中的过冷水滴，可造成严重的飞机结冰；冰雹可打坏飞机；闪电会对无线电罗盘和通信设备造成干扰和破坏；雷击能损伤飞机的蒙皮。

According to the type of jet engine turbine jet can be divided into, stamping jet, pulse jet, rocket plane.

按喷气式发动机的种类可分为涡轮喷气式飞机、冲压喷气式飞机、脉动喷气式飞机、火箭飞机。

The stealth warplane for the microwave radar usually have complicated structures with the coating of wave absorption. On the base of calculation and modeling of the geometrical structure of the warplane in real size, the HF RCS of the air crafts under two different polarizations in different direction have been calculated with the FDTD. The result shows that the above mentioned stealth warplane have the obvious characterstics of frequency resonance, polarization and the relatively large RCS in HF Band 10-30dBm2, which can be used as the theoretical reference for selection of working frequency for sky wave OTH Radar and it also means that the sky wave OTH radar has good capability of anti-stealth targets quantitatively.

对微波雷达具有隐身作用的飞机，其形体较为复杂且表面涂敷有强吸波材料在对一种具有隐身几何外形结构实际尺寸飞机进行计算建模的基础上，文中采用FDTD技术得到了两种极化状态下该飞机无涂敷时不同方向上的短波雷达截面RCS值其结果显示了这种隐身几何外形飞机在短波波段有明显的频率谐振特性、极化特性和较大的RCS10-30dBm2，可为天波超视距雷达在选择工作频率时提供理论参考，并定量地说明天波超视距雷达具有较优的反隐身目标能力

The tailless aircraft is regarded as one of the developing directions of the new type aircrafts.

无尾飞机是新型飞机的发展方向，与传统的飞机相比，其飞行控制系统更为复杂，故障出现的概率也更大，因此重构控制系统是无尾飞机安全飞行的保障。

Compared with is early about annihilates the news which 10 aircrafts exposes to come from in 2002 Zhuhai Aviation display, in front of Aviation display annihilates 10 aircrafts whether declares a position the focal point which into the media and the masses pays attention, although determination Aviation display general air show, but the audiences still place hopes in annihilates 10 aircrafts to be able in Aviation display period are publicized, even many foreign countries military expert catches up with specially, in order to as soon as sees this kind of aircraft the elegant demeanor

比较早的关于歼10飞机曝光的消息来自2002年珠海航展，航展前歼10飞机是否亮相成为媒体和群众关注的焦点，虽然确定航展上将没有飞行表演，但观众们依然寄希望于歼10飞机能够在航展期间被公开，甚至不少外国军事专家专程赶来，就为了一睹这种飞机的风采

His company produced 24 new airplanes, Model 40 As, in six months to begin the new service. The Model 40As were open cockpit biplanes with wheels rather than pontoon. They could carry 1,200 pounds of mail. However, tucked away under the wings was a small closed compartment that could carry two very brave passengers. The Model 40 As were the first planes to be used for regular long-distance passenger and mail service.

公司半年制造了24架新型飞机(40A 型)，准备开展这项新业务。40A 型飞机是带有敞开式驾驶舱的双翼飞机，配有轮子，没有浮筒，可装载重达1200磅的邮件，不过，其机翼之下隐藏了一个可容纳两名勇敢乘客的小型封闭舱。40A 型机是最早定期运送长途旅客和用于邮政服务的一批飞机。

Along with the development of aircraft design engineering data management system (CADIS/IEDMS), a model of digital product in aircraft design phase, which is composed of integrated document, product structure and change control, is proposed. Then the functional model of aircraft design engineering data management system is interpreted, and the generating algorithm of product structure tree in this system is ...

结合飞机设计工程数据管理系统的开发，提出并描述了由集成文挡、产品结构和更改控制组成的飞机数字化产品模型，阐述了飞机设计工程数据管理系统的功能模型，重点讨论了系统中产品结构树的生成算法，最后提出了基于工程数据管理的数字化飞机并行设计过程模型。

Along with the development of aircraft design engineering data management system (CADIS/IEDMS), a model of digital product in aircraft design phase, which is composed of integrated document, product structure and change control, is proposed.

结合飞机设计工程数据管理系统的开发，提出并描述了由集成文挡、产品结构和更改控制组成的飞机数字化产品模型，阐述了飞机设计工程数据管理系统的功能模型，重点讨论了系统中产品结构树的生成算法，最后提出了基於工程数据管理的数字化飞机并行设计过程模型。

If you are unfortunate enough to the lovelorn, please tell me, I will help you out, really, please contact me!

如果你不幸失恋了，请告诉我，我会帮助你摆脱困境，真的，请联系我啦！

China's plan to cut energy intensity by 20 percent and pollutant discharges by 10 percent between 2006 and 2010 is a case in point.

中国计划在2006年到2010间降低20%的能源强度和减少10%的主要污染物排放，就是一个这样的例子。