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The holistic design of the system and resolved the designs of software and hardware based on VXI bus are put forward according to the demand of test system. The hardware and software is designed, including the formation and design of hardware system, visual instrument software architecture, program design for instrument driver, high speed real-time data collection. In the dynamic test program, the idea of"software is instrument"was applied to meet the diverse test demands. Last, it is proposed that the VXI test system be developed to more totalization and networked. The basic theory of system identification was introduced briefly at first. The principle of spectrum analysis system identification based on Wiener-Hopf equation was expatiated. and the questions in applying Peusdo Random signal as spectrum analysis methods stimulate signal was studied, The generation principle of the peusdo random signal is researched, the characteristic of peusdo random are analyzed from time domain and frequency domain, the inverse repeat peusdo random signal is brought forward to make up the shortage of ordinary peusdo random signal. And a new chaos genetic algorithmis presented to solve the unprecise problem of the traditional method. In the servo valve dynamic characteristic test system, the spectrum analysis methods was applied successfully, the servo valve dynamic characteristic could be acquired rapidly and exactly, the test results were analyzed and the ameliorate methods were brought forward at last.

结合航天某集团液压测试中心测试系统的需求，提出了基于VXI总线的液压测试系统的整体设计方案，完成了测试系统的硬件设计与软件设计，包括硬件系统构成与设计、虚拟仪器软件结构、仪器驱动程序设计、高速同步实时数据采集等内容；以伺服阀动态特性测试为例设计了测试模块，该模块体现了VXI总线仪器软件开发所倡导的"虚拟仪器"的思想，以软件的灵活应用满足了不同的测试需求；结合自动测试系统的发展，研究了VXI测试系统与网络技术结合，实现各种软硬件资源共享，进一步提高设备及数据的利用率和系统的扩展性，使自动测试向综合化、网络化方向发展；研究了伪随机信号作为谱分析法辨识的激励信号时存在的问题，讨论了伪随机信号的产生机理，从频域和时域分析了伪随机信号的性质及其应用，提出了用逆重复伪随机信号弥补了普通伪随机信号的不足，并以混沌遗传算法对逆重复伪随机信号产生过程中的参数进行优化，可以更合理而不是凭经验产生需要的逆重复伪随机信号。

This kind reads equipment was last year of face city, although up to now, business affairs tycoon still does not have this electron to had disclosed any special detail with respect to its sale status, but the influence of Kindle is apparent already special Oh, be in for instance last week, famous compere Europe general plays the show that take off a mouth - Wenfuli once expressed, this is oneself most endearment vade mecum is tasted one of.

这种阅读设备是去年面市的，尽管迄今为止，这家电子商务巨头还没有就其销售情况披露过任何专门的细节，但是Kindle的影响力显然已经非常了得，比如在上周，著名脱口秀主持人欧普拉-温弗里就曾经表示，这是自己最钟爱的随身物品之一。

Finnish hitman Dalla Valla scored 20 goals in 28 appearances for the U18s last term, while left-back Buchtmann was a star as Germany U17 won the European Championships last month.

上赛季前锋Dalla Valla 代表U18出场28次攻入20球，左后卫Buchtmann上个月随德国U17获得欧洲杯冠军的比赛中相当耀眼。

"Before last year I knew Stuttgart as the place where Colin Jackson ran the former World record. Last year after the WAF, I went to the Stuttgart zoo; it was a very funny place!"

"在去年来这里比赛之前我就知道斯图加特也是科林-杰克逊创造前世界纪录的地方，去年我在总决赛比赛之后去了斯图加特的动物园，那里很好玩。"

I fell in love with you .The last waltz should last forever.

我爱上了你，这最后的一曲应该永远继续。

I fell in love with you, The last waltz should last forever.

我爱上了你。这最后一曲应永远继续。

I fell in love with you, The last waltz should last forever La.

我爱上了你，这最后一曲应永远继续。

She finally closed the wetted diary which recorded her last happy times and last smile.

她终于合上了那本满载着她最后的欢愉与微笑的日记。

The corner of the sofa is very good. then here is my last,'- unclosing a pretty sketch of a gentleman in small size, whole-length - 'my last and my best - my brother, mr.

这个沙发的一角很好，接下来是我最后一幅尚未完成的画，这是个小画幅的素描，是一位绅士的全身像--是我最后一幅画，也是最好的画--我姐夫约翰。

Last but not least , is the online wholesale market and, last but not least , is ...

最后但并非最不重要的一点是网上批发市场、最后但并非最不重要的一点是。。。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。