试验性质的

For efficient utilization of phosphorus—rich rhodochrosite and complicated sulfides, we have carried out some studies on enrichment of manganese, dephosphorization and bio-catalytical oxidation of sulfides supported by NSFC (No. 59374150, 59774010), the main contents include: properties of Huayuan Manganese ore; microorganisms preparation of dealing with manganese ore; physiological and biochemical properties of microbes used; the mechanism of microbes function to manganese ore; the separation, tameness of Thiobacillus ferrooxidans and its nutriment; bio—catalytical oxidation mechanism of sulfides; extraction of gold by bio—catalytical oxidation—cyanidation.

为解决我国储量丰富的高磷贫碳酸锰矿石和复杂硫化矿有效利用中存在的问题，我们在国家自然科学基金委员会的资助下（No.59374150，No.59774010），以花垣锰矿石和黄铜矿、黄铁矿等为研究对象，进行了高磷贫碳酸锰矿石的微生物富锰降磷和生物催化氧化硫化矿等的研讨工作，内容包括：花垣锰矿石的性质研究；富锰降磷微生物的筛选；试验用微生物的生理生化特性及富锰降磷机理探讨；催化氧化硫化矿细菌的分离、驯化及营养条件确定；生物催化氧化硫化矿的机制；金的生物催化氧化—氰化提取。

Based on collected drill hole materials and predecessor publication\'s dates on seabed sediments physical and mechanical characters in the Yellow River subaquatic delta,the distribution and engineering geological nature of this area sediments are studied systematically;though the analysis geotechnical achievement tables and compression curves of those data,the layered summation was used to calculate the final subsidence quantity;Terzaghi consolidation theory was calculated and the Plaxis software was simulated subsidence with time changes;based on measured dates and other method,the quantitative analysis results were verified,Finally this study analyzes influencing factors and proposes control measures and proposals.

本文通过收集的钻孔资料以及前人发表的黄河水下三角洲海底沉积物物理力学数据，对研究区的沉积物分布，沉积物工程地质性质进行系统的研究；通过对调查资料中的土工试验成果表以及压缩曲线分析，采用分层总和法计算最终沉降量，采用太沙基固结理论计算和Pl(来源：ABCe2论文网www.abclunwen.com)axis软件模拟沉降随时间的变化关系；通过实测数据以及其它方法验证定性分析得出的结果，最后分析引起地面沉降的因素，并提出地面沉降的控制措施和建议。

The platform of arcing experiment is composed of the arc fault generator and the current monitoring and saving unit, and several load appliances, then recommends the experimental process and the instruct of the equipments.

说明了电弧的基本性质，产生原因和故障电弧的危害，AFCI的结构和故障电弧检测的基本原理和我们研制的AFCI的技术路线。电弧试验半台由电弧发生器，录波设备和负荷设备构成。

However, information on agricultural practice to improve this kindof soils is rather scanty. In the present study, field experiments were conducted tostudy on effects of fertilization practices on the physico-chemical properties and thecrop productivity in gleyed paddy soils from the slate in Taojiang county and theQuaternary Red Clay in Ningxiang county, respectively.

本文通过田间小区试验，研究了几种施肥措施对桃江县板页岩母质发育的潜育性稻田和宁乡县第四纪红土发育的潜育性稻田的土壤的理化性质以及作物生产力的影响，以期为这两类退化稻田的改良修复提供依据。

Meanwhile, through the actual production and empirical data, it is proved that this heap leaching process do not suit this kind of ore.

摘 要：从北金矿区矿石性质入手，结合实际生产的情况，重点分析了北金金矿石难浸的原因，同时用实际的生产数据和试验数据证明堆浸工艺并不适合这类矿石，为该地区同类矿石的提取、资源的合理利用提供了很好的借鉴。

In studies of interaction among pile, platform that above it and surrounding soil, this paper employ the concept of plate element to simulate the loading character of platform, and employ the concept of solid element to simulate the character of pile and soil, using the finite element method after understanding the geometry properties of pile, soil and the platform. Analyzing the loading properties of the three entities above and their deformation, this paper also employ a special element, Penalty Element. The introduction of penalty element of this kind has served to guarantee the join harmony of displacement between solid element and plate element, thereby effectively resolving the join problem between platforms, pile that support it and surrounding soil.Considering significant property difference between pile material and its surrounding soil, there may be much shear stress on their contact interface produced under vertical load, thus causing displacement or fission. Therefore it is necessary to adopt one special constitutive law of this kind of contact interface, which can reflect its feature of loading and deformation thoroughly. On the basis of the deformation feature and constitutive laws of some contact interface obtained by Zhang Dongji and people concerned through some single-shear experiments on contact interface between structure and soil, this paper employ one pile-soil three-dimensional constant thickness contact interface model to simulate the " slide" taken place on the interface between pile and its surrounding soil. With this kind model, this paper has also created one finite element model, which can be applied to perform finite element calculation and analyze the pile-loading feature, and deduced its element stiffness matrix.

在承台-桩-土共同作用中，考虑桩与承台的几何特性，采用有限元方法，用实体单元模拟桩土，用板单元模拟承台，更具体地分析桩和承台的受力特性和变形，而且还采用罚单元—既实体单元与板单元之间连接必须满足变形协调条件，来有效地解决了承台与桩土的连接问题，且在桩土共同作用中，由于桩体结构的材料性能与周围土层性质相差较大，在竖向荷载下有可能在其接触面上产生较大的剪应力从而导致错动或开裂，因此，为了充分反映桩土接触面上的受力及变形特征，应采用一种桩土接触面特有的本构关系，即利用张冬霁等人关于结构与土体接触面单剪试验所得到的接触面变形特征及其本构关系，引入桩-土三维等厚度接触单元来模拟桩与桩侧土之间的&滑移&，在此基础上建立可用于桩基承载性状分析的有限元计算单元模型，并推导出了各单元的刚度矩阵。

Beginning with forming mechanics of seal medium, the character of magnetic fluid has been researched and magnetic fluid, which fits the demand, is made out. Then from the point of fluid mechanics, the kinematics equation and Bernoulii equation of magnetic fluid are derived. Based on the production practic of sinterer, straight seal theory is given. Last of all, the accuracy of deriving of theory is proved by experiment.

作者首先从密封介质的形成机理入手，分析了磁性流体的性质，配制出符合要求的磁性流体，又从流体力学的角度推导出磁性流体的运动学方程和磁性流体的贝努力方程，根据烧结机生产的实际，进一步推导出应用于烧结机上的直线密封理论，最后通过试验验证了理论推导的正确性。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。