循环法

The synthesized MnO_2 material under different heat-treat temperatures were tested by X-ray diffraction and scanning electron microscopy.The results indicated that the MnO_2 material was granular and had particle size of about 200nm.

采用循环伏安法对MnO_2电极材料进行测试，在1mol/L Na_2SO_4电解液、-0.2～+0.8V扫描电位内，不同扫描速率下电极均表现出理想的电容特性，当扫描速率等于1mV/s时得到最大比容量

Experts believe the project with the traditional lead-smelting technology, has the following characteristics: First, the smelting process to adopt internationally advanced level of oxygen blowing at the end of smelting - to restore the blast furnace method, the use of lead refining electrolysis ; Second, the use of sulfur dioxide gas double-absorption acid technology, the production of domestic water use of recycled water sewage treatment process; Third, the use of waste heat for power generation, waste to make full use of energy reduces energy consumption; Fourth, the high level of automation, low power consumption , Investment, raw materials adaptable, comprehensive recovery rate of high-quality products.

专家认为，该项目与传统炼铅工艺技术相比，具有以下特点：一是冶炼工艺采用具有国际先进水平的氧气底吹熔炼-鼓风炉还原法，铅精炼采用电解法；二是二氧化硫烟气采用两转两吸制酸工艺，生产生活用水采用循环水污水处理工艺；三是利用余热发电，充分利用废弃能源降低了能耗；四是自动化水平高、能耗低、投资省、对原材料适应性强、综合回收率高、产品质量好。

When the coefficient matrice is index p cycle matrice (p = 3,4,5),we educe the relation between preconditionging Jacobi 、 GS iterative matrices" and classical Jacobi iterative matrices" eigenvalue; As an application, make some preconditioning iterative factors, when classical Jacobi iterative converge, the preconditioning iterative methods may converge faster.

2系数矩阵是指数p=3，4，5循环矩阵时，分别给出了预条件Jacobi、Gauss-Seidel迭代矩阵与传统块Jacobi迭代矩阵二者特征值之间的关系，作为一个应用，通过预条件因子的特殊取值，使传统Jacobi迭代收敛时，预条件块迭代法的收敛速度成倍提高。

Methods The intestine tract and blood vessel of rats were perfused circularly with intestinal tract perfusate or blood vessel perfusate with uric acid 140 mgL^(-1), respectively. The content of uric acid in perfusate was measured by the method of uricase and peroxide enzyme.

大鼠肠道、血管分别用含尿酸140mgL^(-1)的血管灌流液和肠灌流液循环灌流，尿酸酶及过氧化物酶法测定灌流液中的尿酸含量。

The electrochemical quartz crystal microbalance, cyclic voltammetry, and SEM were used to study the growth mechanism of the mixed of osmium hexachloroplatinate (OsPtCl6), osmium oxide and platinum films.

本实验使用电化学石英晶体微天平、扫描式电子显微仪及循环伏安法来研究锇氧化物/铂/锇铂氯化物薄膜的沉积与薄膜成长之机制及电化学特性。

LI Chao, FAN Yanliang, XU Jiaqiang, YANG Shuting, CHEN Yongyao （1 College of Material Science and Chemical Engineering, Zhengzhou Institute of Light Industry, Zhengzhou 450002; 2 Golden Dragon Precise Copper Tube Group INC.

文章摘要：用化学沉淀法在Li1.05Mn2O4表面包覆一层Mg2，然后进行热处理，制备出表面用MgO改性的Li1.05Mn2O4，并对材料进行了X射线衍射、恒电流充放电、循环伏安、交流阻抗等测试。

According to the appointed carrier mission and setting the pay load of the space transportation craft as objective function, energy characteristic model, mass model and orbit model of the hydrogen-oxygen FFSC (Full Flow Staged-Combustion Cycle) were established, and the numerical method was used to optimize the performance parameters.

根据给定的运载任务，建立了氢氧全流量补燃循环发动机的能量特性模型、运载器质量模型和轨道模型，以运载器有效载荷为目标函数，利用枚举法进行了发动机性能参数的优化研究。

We tried to prepare Li2S-SiS2 based thionitride glasses by the solid synthesize method, where Li3N was used as a nitrogen source. This paper reports the preparations, electrical, and electrochemical properties of Li2S-SiS2-Li3N glasses. Phase identification was carried out by X-ray diffraction .Ionic conductivity of the pelletized solid electrolytes was investigated through AC impedance.

本文以无机固体电解质为研究对象，利用固相合成方法制备了以Li2S-SiS2为基体掺杂Li3N的三元体系Li2S-SiS2-Li3N；通过XRD对样品进行了物相分析；采用交流阻抗技术测量了电解质样片的阻抗谱并计算了离子电导率和活化能；并利用循环伏安法估测了电解质样片的电化学稳定性；用固体电解质组装成模拟电池进行充放电测试。

Kill Well,Deep Water Driller's Method, Safety Margins, Circulation Rate

深水，压井，深水司钻法，安全余量，循环流量

The characteristics of CaCO〓 crystallization fouling on heat transfer surface in simulated circulating hard water flowing upward system are investigated systemically through dynamic thermal resistance experiments.

4模拟工业循环冷却水系统中CaCO〓在竖直换热面上的结垢过程，用动态热阻法对CaCO〓的结垢机理进行了系统的实验研究。

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