变圆

Secondly, we consider the stability problem of a more widespread class of feedback interconnected system, which can allow the nonlinear operator to have a deviation. And some stability criteria are presented too.

并将其应用于绝对稳定性问题，得到了时变的圆判据，也给出了多输入多输出情况下的一些判据，这些结果对非线性环节是否解耦不作要求。

Keeping the same, two-toned color scheme, and an elegant curvature, Paulin's supercar will be unveiled at the 2009 Pebble Beach Concours d'Elegance.

保持不变，两个缓和配色方案，和优雅的曲率，波林的超级跑车将在2009年推出圆石滩竞赛德优雅。

Using a model regarding the impeller as homogeneous rotating circular with same thickness and various density,the residual strain field and plastic deformation zone size of certain supercharger impeller were calculated at 30 000 r／min over-speeding preload by means of axial symmetry plane stress elasto-plastic analysis method,and were compared with the result of resistance strain measurement method.

将柴油机涡轮增压器叶轮简化为一个均质、等厚、变密度的旋转圆盘，按轴对称平面应力弹塑性分析方法计算了国产某型增压器叶轮在30 000 r／min超速预加载后的残余应变场和轮内塑性区尺寸；又用电阻应变测量法测得超速叶轮的实际应变。

Combining with the National Natural Science Foundation ofChina(No.50478032), following researches were done in this thesis: 1 The variation regularity of the ultimate anti-bending capacity of therectangular-sectioned beam with different corrosion has been obtained through thequalitative analysis of 48 beams (32 corroded beams and 12 comparing beams) withaccelerated corrosion; 2 The conclusion has been obtained that the strain of corroded steel bar andconcrete no longer fit in with the assumption of plane section through the analysis ofthe strain data, the strain relation of steel bar and concrete in the mid-span section ofvariously corroded beams at ultimate has been obtained. Through the building of newgeometric relation, the expression of the height of compressive area in the corrodedbeam with rectangular section has been deduced, and the formula with corrosion rateas the main variable for the anti-bending capacity of the corroded concrete beam hasbeen suggested and verified by experiment.; 3 The influence of steel bar corrosion and the concrete regression to the flexureductility coefficient of the corroded structure component has been analyzed. Based onthe relation of steel bar and concrete at yield and ultimate, the expression for theflexure at yield and ultimate of corroded reinforced concrete beam, and the model forthe calculation of the flexure ductility has been built.

本文结合国家自然科学基金项目(50478032)"既有钢筋混凝土桥梁时变可靠度研究"，主要进行了以下研究工作： 1通过对48根快速锈蚀钢筋混凝土矩形截面梁(32根锈蚀梁和12根对比试验梁)数据的定性分析，得到了不同锈蚀率下，锈蚀钢筋混凝土矩形截面梁极限抗弯承载力的变化规律； 2通过对应变数据的分析，论证了锈蚀构件钢筋和混凝土的应变不再符合平截面假定的结论，并通过回归分析得出了不同锈蚀率的螺纹钢筋梁和光圆钢筋梁在极限弯矩作用下，跨中截面处钢筋应变和钢筋处混凝土应变的关系，通过构造新的几何关系，得出了锈蚀钢筋混凝土矩形截面梁计算受压区高度的表达式，既而得出了以锈蚀率为主要变量的锈蚀钢筋混凝土矩形截面梁的正截面抗弯计算建议公式，并通过试验数据加以验证； 3分析了钢筋锈蚀和混凝土劣化对锈蚀构件曲率延性系数的影响，结合钢筋屈服和极限弯矩两种状态下钢筋和混凝土的应变关系，分别得到了锈蚀钢筋混凝土矩形截面梁屈服曲率和极限曲率的计算表达式；既而推导出曲率延性系数的计算模型。

These systems include neutral particles with general spin and magnetic moment moving in an arbitrarily varying uniform magnetic field or in the field of a circularly polarized electromagnetic plane wave, the generalized time-dependent harmonic oscillator, and Heisenberg model in a rotating magnetic field.

包括具有一般自旋和磁矩的中性粒子在任意时变均匀磁场中的运动、在圆偏振平面电磁波场中的运动，一般含时谐振子体系，旋转磁场中的 Heisenberg 模型等。

A scarcely perceptible smile passed over Kutuzov's podgy face, disfigured by the scar of a wound .

库图佐夫那张因负伤而变得丑陋的胖得发圆的脸上，掠过一丝难以觉察的微笑。

A scarcely perceptible smile passed over kutuzovs podgy face , disfigured by the scar of a wound .

库图佐夫那张因负伤而变得丑陋的胖得发圆的脸上，掠过一丝难以觉察的微笑。

The export variant of the P-12 short-range ballistic missile is armed with a medium-stage global positioning system guidance device and has a circular error probable, or CEP, of 50 meters (164 feet).

出口的变体为P -12短程弹道导弹是武装起来的一个中等阶段，全球卫星定位系统制导设备，并有一个圆概率误差，或临选， 50米（ 164英尺）。

The numerical results under different methods, especially the simulation of recirculation region and reattachment length were carefully checked and compared.

比较不同修正方法下的圆管湍流计算结果，尤其是回流区域和再附着长度的模拟结果表明：变模型常数的κ-ε模型有效地的增加了近壁区域的湍能耗散率，使再附着长度的计算结果更接近于实验结果。

But then she might not be good at understanding the inflections of one such as this. Certainly it was hard to read the grimaces of such a round-eyed man.

也许是她第一次见到这种人，所以她理解不了他的擅变，当然更难读懂他瞪圆眼睛做着鬼脸表情下的真实意图。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了