要求高精度的

The phase of optical wave can be recovered by the intensity transport equation under the paraxial approximation For the optical system with diffraction limit, it is difficult to get the boundary radical slope of phase and sample in the circular domain boundary when using the intensity transport equation to recover the phase, consequently, we reviewed an algorithm mentioned in the reference ［4］, namely, the equation, computation domain and boundary condition are changed, then the phase is reconstructed by the multigrid method and corrected at last Moreover, the experiment system is set to testify the algorithm, and the recovered phase from the intensity data detected by CCD is compared with the result from phase retrieval algorithm, it is found that the phase reconstruction error can reach 017 λ in the case of non-uniform intensity distribution, as a result, the method is suitable for the phase recovery with low wavefront sensing accuracy.

在傍轴近似条件下，可以利用光强传播方程对畸变波前进行相位恢复。对于衍射受限的光学系统，很难获得相位的边界径向斜率值作为边界条件，此外，要获得精确的圆域边界采样值也并非易事。为了克服上述困难，进一步研究了相位恢复改进方法，即改变了方程的表示形式、计算区域和边界条件，并用多重网格法进行求解获得重构相位，最后再将其修正。为了验证算法的精确性，搭建了实验系统对算法进行实验验证，将由CCD探测的光强分布进行计算得到的相位分布与相位恢复算法的结果进行比较，证明在光强分布非均匀的情况下，该方法恢复的相位均方根误差能够达到017 λ，可以适用于波前传感精度要求不是很高的相位恢复。标签自适应光学相位恢复相位修正光强传播方程 adaptive optics phase retrieval phase correction intensity transport equation

Then,the paper analyzes common-mode voltage and output voltage range of operational amplifier influenced by temperature and process problems that may appea.

基于混沌、均匀分布的真随机数发生器的工作电路和精度要求较高的电压参考电路的温度漂移进行分析，给出了仿真得到的温度曲线；分析了工艺中可能存在的问题和温度的影响与运放的共模电压和输出电压幅度，以及与混沌公式直接相关的开关电容等，根据最坏分析得到混沌公式，给出了仿真测试结果。

With the widespread use of electricity, electricity sector work on electric energy measurement of a higher demand, power meter to bear the features are increasing, currently being used in the induction of universal energy form, as accuracy Di Qi, big error , single function, such as mechanical wear can not overcome the shortcomings, the customer can not meet the electricity demand and electricity enterprises development.

随着电力的广泛使用，供电部门对电能计量工作提出了更高要求，电能计量表要承担的功能也越来越多，目前所普遍使用的感应式电能表，由于其精度低，误差大，功能单一，机械磨损无法克服等缺点，已不能适应用电客户的需求和电力企业改革发展的需要。

In the recent years, the company has successively developed the fully servo control extra-fine metallic wire drawing machine without tension bar, stainless steel fine wire drawing and annealing machine, the true meaning constant tension and constant line rate and fully-automatic single-head and single-control annealing wire coiling machine, fully-automatic active wire laying device and inductive and constant annealing extra-fine copper wire drawing machine and other new products, which have basically solved the defects of the finished product wires manufactured by ordinary equipment that tension inequality, disordered wire arranging, incapability for anti-drawing intensity and extension rate control and low finished product rate, etc and have improved the product quality to a higher grade.

近年来，本公司相继开发出全伺服控制无张力杆的贵金属极细线拉线机，不锈钢微丝拉丝退火一体机，真正意义上的恒张力，恒线速，全自动的单头单控退火线绕线机，全自动主动放线装置以及带感应式连续退火的极细铜线拉线机等新产品，根本解决了普通设备生产出的成品线内外松紧不一，排线不整齐，抗拉强度和延伸率无法控制，成品率低等缺陷，使产品质量更上了一个档次，设备的外观，制造精度和技术性能可以与进口设备相媲美，完全能够满足客户国外订单的高品质要求。

The feed mixer took in the feed processing process the leading equipment, its performance quality directly will affect the feed product the quality and the production efficiency.

饲料混合机作为饲料加工过程中的主要设备，其性能的好坏将直接影响饲料产品的质量和生产效率。传统的饲料混合机不仅效率不高，而且配料精度低，能耗比较大，已经不能满足饲料业的发展要求。

This hard zinc-coated wire electrode is used wherever highest demands on precision and surface quality are placed-with consistent production results Due to its excellent straightness.

由于其稳定的生产质量，这种硬质镀锌电极丝适用于精度和表面质量具有较高要求的应用。该产品具有较好的垂直度，可以保证准确的自动穿线。

This hard zinc-coated wire electrode is used wherever highest demands on precision and surface quality are placed-with consistent production results Due to its excellent straightness it ruarantees proper automatic threading.

由於其稳定的生产品质，这种硬质镀锌电极丝适用於精度和表面品质具有较高要求的应用。该产品具有较好的垂直度，可以保证准确的自动穿线。

This enter and give system realize worker stock with two major basic functions that retreat soon mainly, To switch over and adopt getting automatically controlled, thus avoid between milling cutter and surface scotch that has process already when stopping speed.

其设计方案主要从总体方案设计、各主要部件技术参数的确定，及其空间的合理布置、传动方案的比较选择、各种典型零件的设计计算、校核、电动机选型等。进给系统作为机床的主要功能系统，对之有较高的运动速度，精度要求。

The various aspect problems in city construction are more and more complex with cities scale and up-to-dateness continuously growing. The requirements of accuracy on engineering geological environment evaluation are higher and higher and classical method of qualitative analysis is unable to meet the challenge of city planning and proper exploitation and utilization of land resources. A scientific and accurate method of engineering geological environment evaluation is necessary.

随着城市规模和现代化程度的不断提高，城市建设所涉及的各方面问题日趋复杂严重；因此对城市工程地质环境质量评价的精度要求越来越高，传统的定性评价方法已难以满足城市规划建设和国土资源合理开发利用的需求，寻求一种科学准确的工程地质环境评价方法势在必行。

At present, as the production level is advanced with the technology of astronavigation and continuous development of aviation, higher accuracy and efficiency in measurement are demanded to meet them. Therefore, studies on the stiffness measuring of spring tubes, typical plastic parts, is of great importance in enhancing strength of national defense.

随着制造技术水平的提高以及航空航天技术的不断发展，对精密弹性元件的加工精度和加工效率提出了更高的要求，所以研究以弹簧管为代表的该类弹性元件的刚度精密测量技术对增强国防实力有着重要意义。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐