最理想的

Shadow effect can not be neglected for thermal analysis of spacecraft,Accroding to the angle between solar light and antenna orbit plane and its orbit location,analytical geometry method was used for accurately calculating solar radiation heat flux distribution of reflector surfaces.To analyze the temperature field under heat flux,the formulations of net radiation flux density between two gray elements and the net flux density of gray surface under external thermal flux were deduced.Based on the characteristic of space environment,the nonlinear temperature distribution in transverse direction of reflector shell self radiation were considered,the finite element formulations were given for orthogonal material layered shell by Galerkin method.A layered element including a inner heat source layer was proposed,and the finite element formulation expressed by DOF of the inner heat source layer were put forward with temperature and heat flux boundarys between adjacent layer.

单馈反射面赋形天线是未来星载天线发展的一个重要形式，分析了基于物理光学、几何光学和几何绕射理论的理想反射面辐射场；介绍了基于几何光学的反射面天线赋形方法；针对赋形过程中辐射场的快速分析要求，比较分析了基于物理光学的Fourier-Bessel和Jacobi-Bessel级数展开方法以及GB展开分析方法；利用GB展开快速分析方法在20GHz频率下对0.6m口径的天线进行赋形分析，实现中国大陆的30dB增益覆盖，通过数值计算研究了固定增益期望下的口径尺寸随频率的变化，以及频率为20GHz的不同尺寸天线赋形后的覆盖目标区域最大增益的变化情况。

Our freedom in the ideal, is a stipulation that is free from time and spaces, be free from the molestation of the spirit and body, is the independence and abundances of the economy, be free from the beggarliness and food and clothings to live to go bothersome, is to living the chronic illness dead without the sorrow to have no sorrow, is the dream of the person and utmost realization of the potentials.

我们理想中的自由，是不受时间和空间的约束，不受精神和肉体的折磨，是经济上的独立和富足，不受贫穷和衣食住行的烦扰，是生老病死的无忧无愁，是人的梦想和潜能的最大限度的实现。

On the basis of twin-roll thin strip continuous casting experiments and solidification structure characteristic analysis of thin strip and combining with the simulation results of effects of technological parameters, the forming mechanism of solidification structure zone (especially equiaxed crystal zone) on 1Crl8Ni9Ti stainless steel twin-roll thin strip was investigated.

在双辊薄带连铸实验和薄带凝固组织特征分析的基础上，结合对薄带凝固组织区的模拟预测结果，研究了1Cr18Ni9Ti不锈钢双辊薄带凝固组织区的形成机理。结果表明：1Cr18Ni9Ti不锈钢双辊薄带凝固组织中的等轴晶区不但在凝固类型为半固态时形成，在轧制或理想型时也能形成。其形成机理为，熔池中悬浮游离晶体的沉积、聚集以及在枝晶生长前沿的长大和薄带离开二铸辊最小间隙后，薄带/空气界面换热系数骤然降低抑制了柱状枝品的生长，并促使薄带中部未凝固熔体中游离晶体的择优长大

Researches show that the drive force characteristics of the electric tractor drive system based on series DC motor is close the ideal characteristics, the curves are concave, low speed with constant power, and high speed with constant torque; the electric tractor has large working speed under different shifts, but the extensive coincidence speed shows that the variable ratio of the gear is unreasonable; the maximum climbable gradient of this electric tractor is more than 30%, and does not need frequent shift when working for its extensive climbable gradient; there are many influence factors of continuous working time, which the more obvious factors are working speed and working load, the working time increases with the increase of the working speed and working load.2. Simulation researches on the drive characteristic of the electric tractor.

研究结果表明：基于串励直流电动机(来源：ABC21论文网www.abclunwen.com)的电动拖拉机电驱动系统的驱动力特性场接近理想驱动力特性场，其各挡下的驱动力特性是一组下凹的曲线，低速恒转矩，高速恒功率；同一行驶速度下所对应高挡驱动力大于低挡驱动力，这是由电机的调速特性决定的；电动拖拉机各个挡位下具有较广的稳定作业速度范围，但是各个挡位之间速度重合的范围较多，说明所用变速箱变速比与电动机匹配不合理；电动拖拉机最大爬坡度达到30%以上，并且各挡爬坡度变化范围较广，作业过程中不需要频繁换挡；影响电动拖拉机连续作业时间的因素较多，其中作业行驶速度和作业负荷影响最为明显，作业负荷越大，连续作业时间就越短，作业速度越快，连续作业时间就越短。2、电动拖拉机驱动特性仿真研究。

Until the Marxism propagated in China, the Communist Party of China wasnt possible to unite the whole social power and call on all the people to begin with the new time of social Modernization, an active, powerful time, to realize the Chinese nation independence , socialist system superiority and communize social ideal.

直到马克思主义传入中国，在马克思主义社会现代化思想的指导下，中国共产党以民族的独立解放、社会主义的制度优越性和共产主义的美好理想，最大程度地团结了社会力量到现代化的进程中，从而开启了现代化主动的、积极的、声势浩大的、蓬蓬勃勃的历史时期。

As a result, it shows thatthe static or dynamic subsystem optimum alone is not equal to the system optimum. Three initial value problems met in the optimal design of flying vehicle are studied andconclusions are derived that: orthogonal test method can be adopted to decide the initial valueof static optimization problem, some mathematical techniques can be used to deal with thecostate variables of Maximum Principle and decide the initial value of the costate variable,the indirect method can be used to get the analytical solution under ideal case to guide thechoice of the initial control curve in the direct method. With some numerical examples oftrajectory optimization, it shows that all these methods are useful not only in accelerating theconvergence but also in converging to the global optimum.

针对飞行器优化设计中的三种初始值问题进行了研究，以远程弹道导弹弹道的工程优化为例说明，对于静态优化问题，采用正交试验法选取初始值，不仅可以大大加快收敛的速度，而且更有可能收敛到全局最优解；以气动力辅助变轨问题为例说明，用共态变量的一阶泰勒级数展开可以解决极大值原理中共态变量初值难于确定的问题；以二级弹道导弹的主动段弹道优化为例说明，利用间接法在理想情况下得到的解析解来指导直接法初始控制曲线的选择，将大大有利于提高直接法的收敛速度。

With reforming ratio increasing,the maximal temperature and thermal efficiency of theory cycle is increasing,but the maximal pressure would be decreasing with reforming ratio increasing due to influence of moles.5 Kit experiment results of RE compared to that of hydrous-ethanol vapor engine are studied.

随着重整率的提高，理想循环的最高温度逐渐增大，由于分子体积变化系数的影响，循环最大压力随着重整率的提高逐渐下降；随着重整率的提高，循环热效率逐渐增加。5对比分析了RE发动机和VE发动机台架试验结果。

Total efficacy : withstand the oxidation of skin from the outer environment,totally repair the problems such as darkness,unequal complexion,skin become black caused by sun and etc,meanwhile activate the ability of self-creating water of skin,quicken the make speed of moisturizing cells,enduring moisten skin,and totally beat greases,let PH restore to ideal state,skin enjoy moisturizing,fresh,ease and whiten repair efficacies,build watery vision and the most silky beauty with tecture.

全面功效：对抗外界环境对皮肤的氧化，全面修复暗沉、肤色不均，晒后肌肤变黑等问题，同时激发皮肤自我制造水份的能力，加快保湿因子的制造速度，持久滋润肌肤，并全面击散油脂，PH值回复理想状态，肌肤充分享受保湿、清爽、舒缓、美白修复功效，营造水嫩视觉和最白滑的质感美。

7 The production line put into operation early days of back-end electrostatic precipitator emissions standard will be replaced by silicon high-voltage power supply source of cross-flow, but the effect of the use of the electrostatic precipitator has been unsatisfactory, the original equipment set up ten-speed manual adjustment Stalls in the campaign, the number of open stalls in a process can only be adjusted under the best of the stalls, not with the technology changes and regulation at any time, the impact of collecting results in the actual operation can only be the largest transfer Six to file.

3.3.7该生产线投产初期，窑尾电收尘器排放超标，将可控硅高压电源更换为横流源供电，但电收尘器的使用效果一直不理想，原设备设置十档手动调节档位，在运动时，档位开的数量只能调整在某一工艺状态下的最佳档位，不能随工艺状况的变化而随时调节，影响收尘效果，在实际运行中最大只能调至六档。根据电场面积计算，高压整流柜额定电流应选取1600mA，而实际为1500mA，选用型号偏小。

They have many strange properties such as negative phase velocity, negative refractive index, perfect imaging, inverse Doppler effect and abnormal Cerenkov radiation.

负折射率介质最早由前苏联科学家Veselago在20世纪60年代从理论上提出来的，是一种具有介电常数ε和磁导率μ同时为负值的介质，它具有诸如负相位速度，负折射率，理想成像，逆Doppler频移及反常的Cerenkon辐射等多种奇异的物理现象。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。