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Compared to the previous generation fighters PAK FA possesses a number of unique features combining the functionality of both attack aircraft and fighter plane.

和以前的战斗机相比，PAK FA拥有了一些独一无二的、结合了战斗机和攻击机的特征。

The common method, that all strong-correlation terms of the model are eliminated, can bring the loss in the engineering application, so the new method is proposed that the identified model reserves some correlation. The augmented matrix A is constructed by the outputΔW and the matrix S. The"determinating order based on ratio of determinant"is brought out to screen the strong-correlation terms in the structure identification. The latent root estimation is improved in screening the eigenvalues and eigenvectors. Thus the estimation precision is improved greatly.The consistence check of guidance instrument error coefficients of flight test and ground test is the purpose of flight experiment. The causes of inconsistency of the two models are analyzed. The hypothesis test of linear regression model based on F statistics is proposed to check the consistence.Finally, the instability of error coefficients is probably caused by the change of the flight environments, therefore, the relation between the error coefficients and flight environment is analyzed. The approach is presented to identify SINS guidance instrument error models and compensate the error in the segmented sections corresponding to the change of vertical acceleration of aircraft.

在结构辨识中，常用的方法由于将模型中的强相关项全部剔除而给工程应用带来损失，因此，本文提出了新的有益思想，即在保留一定相关性的基础上进行辨识：将输出向量ΔW与环境函数矩阵S构成增广矩阵A，然后采用"比定阶行列式"来剔除相关向量的方法，这样既可以尽可能多地保留了对落点影响大的强相关参数，又可以对落点影响小的强相关参数给予剔除；在参数估计中，改进了特征根估计中特征根和特征向量的筛选方法，提出"近零"准则，从而大大提高了参数估计的精度；再者，鉴于天地模型"一致性"检验是飞行试验和SINS制导工具误差系数分离的主要目的，因此，本文又深入分析了造成天地模型不一致的原因，提出了采用基于F统计的线性回归模型假设检验方法来进行捷联制导工具误差模型的天地"一致性"检验；最后，鉴于飞行环境剧烈变化可能会对惯性仪表误差系数稳定性带来一定的影响，因此本文深入地分析了SINS制导工具误差系数与外界环境的关系，提出了基于过载变化大小的分段辨识和分段实时补偿的算法。

Company with a professional, high-quality team, stays thoroughly the policy of "honesty running, quality creative new value", and keeps on researching, developing . Scope arrange from auto parts, precise electronic hardware, mould making, spectacle, clocks and watches, wooden furniture, optics and aircraft industry parts, precise cutting tools with ultra hard and good antifraying performance.

公司拥有一支专业性、高素质的服务团队，始终贯彻"诚信经营，品质创造新价值"的宗旨，不断的研究、开发、创新，为汽车配件、电子精密五金件、模具制造、眼镜、钟表、木工家私、光学、及航空工业零部件加工等用户，提供超硬度及良好耐磨损特性——精密切削工具。

The technology and equipment displayed in the exhibition mainly focus on the field of mechanical equipment manufacture in the world, including aircraft, space technology, automobile, motorcycle, mechanics, and war industry. Scale of this exhibition increases over 50 percent each year.

展览会本着振兴装备制造业，促进西部工业经济发展为宗旨，主要集中展示国内外机械装备制造领域的新技术新设备，面向航空航天、汽车、摩托车、船舶、国防军工、通用机械、仪器仪表、五金制品、轻工、电子及科研院所等行业服务。

The Autopilot Control System is a very important part of the aircraft.

自动飞行系统是飞行器一个非常重要的部分，它的工作可靠性关系到飞行器飞行的安全与否。

Pilot checked Melbourne radar and Avalon airfield -- there were no aircraft in the area.

试点检查墨尔本机场的雷达和Avalon -没有人的飞机在该地区。

The United Kingdom also contributed to the programme, but decided to create its own unit of E-3D AWACS aircraft.

英国也促成了方案，但决定建立自己的组室三维预警飞机。

It was for this reason that a supply aircraft picked her up and took her back to Resolute Bay in Canada.

最后，斯坦斯选择放弃，而一架运输机将她送回加拿大的Resolute海湾

He said that China Everbright Holdings aviation financing business to provide short is "sold" and "back" to help domestic airlines to foreign financial institutions to sell the aircraft, and then back to low-cost rent in order to improve the airline financial position.

他说，光大控股提供的航空融资业务简而言之就是"卖出"和"回租"，帮助国内的航空公司向国外的金融机构卖出飞机，然后再低价回租，以改善航空公司的财务状况。

In the back-alley in the coal face when the machine goes to reprint its arch bridge and all of the aircraft ended the lap belt conveyor stack of position limits, a retractable belt conveyor shortened ride Next length of the belt conveyor for the development of the shift to home-unloading nose reproduced below, can be reproduced with the face of the advance goes forward.

在后退式采煤工作面运输巷中，当转载机推移到其拱桥段全部与带式输送机机尾段搭接叠的极限位置时，可伸缩带式输送机缩短一个搭接长度，带式输送机的机发展部移置到转载机卸载机头下方，转载机又可随工作面的推进而向前推移。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。