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  system center
     The form of static model,the improvement of method base system and model base system for generating of dynamic model,system center part model solving control part,generating of a dynamic model are described in detail.
     并对静态模型的表现形式,为产生动态模型而对方法库系统和模型库系统所作的改进,系统中心部件—模型求解控制模块、动态模型的生成进行了详细论述。
短句来源
     At last, using VC++ software, convenient and beautiful interfaces are designed upon the system center PC to control and administrate the system's parameters.
     最后,采用VC++软件,在系统中心PC机上,设计出使用方便、图形美观的界面,能够实现对系统参数的总体控制和管理。
短句来源
     Missile autopilot second order sliding mode control design based on stable system center
     基于稳定系统中心方法的导弹自动驾驶仪设计
     With the electronic resources increased day by day,the library urgently needs the ERMS to carry on the effective management; The article summarizes the ALA ERMI,and carrys on the introduc- tion of the representative systems(including Horizon ERM,Endeavor Meridian,Innovative ERM); Fi- nally proposes the ERMS will become the system center of library in the future.
     随着电子资源的日益增多,图书馆急需电子资源管理系统(ERM)来对其进行有效管理,文章简述了 ALA 的电子资源管理创始计划(ERMI),并对几个有代表性的 ERMS 进行了介绍(包括 Horizon ERM、Endeavor Meridian、Innovative ERM),最后提出 ERMS 将成为图书馆系统中心这一发展趋势。
短句来源
     This dissertation also researches the design of the system center controller, and it simply analyses the CODEC and Radio Frequency and design their data I/O in BMC.
     对系统中心控制器的设计进行了研究,对系统语音编解码(CODEC)模块作了简要的分析以及在BMC中设计了相应的数据接口电路。
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  device center
     The location of the deepest well is moved towards the device center along with the increasing of injection energy.
     最深位阱的位置随注入能量的增加渐渐向系统中心移动。
短句来源
  “系统中心”译为未确定词的双语例句
     The Central Software Designing of Vehicle Supervisory Scheduling System based on GPS/GIS/GSM/GPRS
     基于GPS/GIS/GSM/GPRS的车辆监控调度系统中心软件设计
短句来源
     Analysis of Train Control Centre System Interface for CTCS2
     CTCS2列控系统中心接口分析
短句来源
     The results show that for a 3 mm pupil size,the MTF is 0.55 at 0.5 cycles/(′),matching the visual acuity of the human visual system(1′).
     评价结果显示:对于3 mm瞳孔,该系统中心视场调制传递函数在0.5 cycles/(′)达到了0.55,达到了人眼的最小分辨角(1′)。
短句来源
     SEED-DEC2812 board based on TMS320F2812 chip is chosen as the center of system and other modules are connected to the center board.
     确定选用TMS320F2812应用模板SEED-DEC2812为系统中心,其它功能模块与SEED-DEC2812接口。
短句来源
     A three-mirror,unobscured,high-resolution optical system with large aperture,long focal length was aligned and the results of 0° field wavefront error of 0.094λ rms,+1° field of 0.106λ rms and -1° field of 0.125λ rms at λ=632.8 nm are obtained.
     运用此方法来装调大口径 ,长焦距离轴三反射镜系统 ,在波长λ等于 6 32 .8nm时 ,该离轴三反射镜系统中心视场波像差均方根值达到了 0 .0 94λ ,+1°视场和 - 1°视场的均方根值分别为 0 .10 6λ和 0 .12 5λ。
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  system center
Variations of CT-SLIP at a similar level of detail and complexity may also be appropriate for capturing the whole-system center-of-mass dynamics of locomotion of legged animals and robots varying widely in size and morphology.
      
The precondition of T-CFP is the system's user trusts the system center and center's cheating is meaningless at the same time.
      
At the Prague Asterix Laser System Center (PALS) the Asterix iodine laser delivering up to 700 J/0.5 ns is used as a pump source for X-ray laser experiments and applications.
      
In the planetocentric representation, the orbital motion of the Sun about the solar system center of mass is transmitted to the third body via the second primary body in both the grand and nested three-body systems.
      
The 20-yr oscillation is the fundamental variation in the angular momentum of the solar body with respect to the solar system center-of-mass, while the 165-yr oscillation is the lowest-frequency component of the spin projection variations.
      
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  device center
Reversal of the voltage polarity produces in both electrode arrays a band of DNA migrating from the device center outwards.
      
  systems centre
Since 2003 he has led the Manufacturing Systems Centre at Cranfield.
      


In this paper, a family of travelling wave solutions of nonlinear internal gravity wave in stratified shear fluid is analyzed. An autonomus dynamic system of firstorder differential equations with perturbation velocity u and desity p as unknowns is thus obtained. Qualitative analysis of the topological structu re of integral curves of this system in the neig-hourhood of the origin on the phase plane with u. ρ as cartesian coodinate axes is given.In the plane with parameters du/dz (the shear velocity)and N2 (N...

In this paper, a family of travelling wave solutions of nonlinear internal gravity wave in stratified shear fluid is analyzed. An autonomus dynamic system of firstorder differential equations with perturbation velocity u and desity p as unknowns is thus obtained. Qualitative analysis of the topological structu re of integral curves of this system in the neig-hourhood of the origin on the phase plane with u. ρ as cartesian coodinate axes is given.In the plane with parameters du/dz (the shear velocity)and N2 (N being Brunt-Vaisala fre-qency) as coodinates, there are nine regions with different properties of the singularity at the origin of the phase plane. This singular point is a unstable saddle point if Richardsonnumber Ri< 0 whether du/dz be positive or negative; while as Ri >, this singular poi-nt corresponds to an instability if du/dz is positive but to stability if du/dz is negative. In thesecond quadrant of the du/dz N2 plane the parabola N2 =1/4(du/dz)2 corresponds to the case Ri=1/4 , Which divides this quadrant into two different regions. If the parameters lie below this parabola the origin of phase plane should be a node; It is a centre if du/dz=0, and if the parame-ters lie in a region above the parabola then the origin should be a focus.The nonlinear terms of our differential equations were expanded up to second order. It is shown that the topological structure of the second-order systems is identical with that of first-order systems, the centre point of firstorder systems remains a centre terms. It is interesting that the periodic solution of the second-order systems near the origin satisfy the well-known Kd V equation and corresponds to cnoidal waves. We consider second order terms in order to describe more precisely the variation with time of the flow parameters. This in turn may describe some observed phenomena in the atmosphere and ocean, which can not be explained by considering only first order terms.

本文从层结切变流体的非线性重力内波方程出发,考虑了行波一类流动,对于这一类流动,导得了两个变量(扰动速度和扰动密度)的一阶自治动力系统的常微分方程组.并在以扰动速度和扰动密度为坐标的相平面原点附近,用微分方程定性理论的方法对积分曲线的几何拓扑结构作了定性分析。在相图上按Richardson数不同,把积分曲线分成若干不同性质的区域。当Ri<0时,不管速度切变dū/dz是正是负,奇点是不稳定的鞍点。当Ri>0时,正切变dū/dz区奇点是不稳定的,负切变dū/dz区奇点是稳定的(01/4时是稳定焦点,即存在振幅衰减的周期解;Ri→∞时是稳定的中心,即存在周期解)。 对非线性项展开保留到二次项得到二次系统。分析表明,解的拓扑结构和一次系统完全一致.一次系统的中心点仍是二次系统的中心点,二次系统的周期解满足著名的K_dV方程,是椭圆余弦波.二次系统其它情况下的解(即随时间才变化的速度)和一次系统并不相同,更反映大气和海洋的许多现象(包括湍流)的实际情况。

The report talks about the principles, structure, accuracy analyses, main technical data, characteristics, adjustment and application of a new type internal focusing device for centring. The classical instrument has been greatly improved in the brightness,contr st, measuring accuracy and range because of the skillful design in the structure. It no fonly can be used for measuring centre errors of the optical components in their edging, cementing, mounting and adjusting, etc, but also can be applied to entire...

The report talks about the principles, structure, accuracy analyses, main technical data, characteristics, adjustment and application of a new type internal focusing device for centring. The classical instrument has been greatly improved in the brightness,contr st, measuring accuracy and range because of the skillful design in the structure. It no fonly can be used for measuring centre errors of the optical components in their edging, cementing, mounting and adjusting, etc, but also can be applied to entire system centring error testing of the high performance lenses.

本报告介绍了一种新型内调焦对心器的原理、结构、精度分析、主要技术参数、特点、仪器的调整及使用。由于结构上的巧妙设计,使这种经典式仪器的亮度、对比度、测量精度以及测量范围都得到了极大的改善。因此该仪器不但可以用于光学零件磨边、胶合、装配及调整等工作的中心偏差测量,还可以用于高性能物镜整组系统的中心偏差的检验。

The Strehl Definition (S. D.) is one of commonly used criterion for evaluating the quality of an optical system, especially, for the mircosoopic objectives. In this paper several problems, which play important role in S.D. calculations, are considered in detail. Namely, the defoous, the expansion formula of the wave aberrations of the deoenteral system as well as the numerical calculation method. The proposed method can also be used for estimating the quality of the decenteral optical systems.

本文讨论了偏心光学系统的中心点亮度计算中所必须考虑的离焦、波差展开式、数值计算等几个主要问题。

 
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