英语人>网络例句>studied 相关的网络例句
studied相关的网络例句

查询词典 studied

与 studied 相关的网络例句 [注:此内容来源于网络,仅供参考]

According to the studied results at present, the studied objects are mainly thin plate and beam about sound radiation mode, a method computed sound radiation mode of complex structure is presented in this dissertation, according to the results of the previous two chapter, a theoretical method to solve acoustical radiation mode and acoustical radiation efficiency of complex structure by boundary element method and acoustical radiation theory is posed, the acoustical radiation power is expressed as a Hermitian quadratic form, while the radiation modes is determined by general eigenvalue decomposing, and then the radiation efficiency is computed via the orthodoxy of radiation modes with regard to impedance matrix and average velocity matrix; lastly, the validity of the method is proved by pulsating sphere and radiating cube with analytical results. According to results of the form three chapter, the structure sound radiation sensitivity is studied in detail, the sound radiation power of structure can be expressed as positive Hermitian quadratic form, the sound radiation sensitivity can be expressed as two parts by partial differential with respect to design variable, which are sensitivity of boundary velocity and impedance matrix, combined with the theory of FEM and BEM, the structure sound radiation can be translated to the analysis of structure dynamic sensitivity and impedance matrix sensitivity. The theory posted in this dissertation is tested by the FEM software ANSYS and the software AAS programmed by author.

在前几章的基础上,通过结构声辐射的模态理论对结构的声辐射的机理进行了深入地探讨,针对目前声辐射模态的研究对象主要是简单的板和梁类结构,提出了一种计算复杂结构声辐射模态的方法,利用前两章研究所得的结论,将边界元方法与广义特征值的理论结合起来研究了复杂结构的声辐射模态与声辐射效率,先将结构的声辐射功率表示为一个正定的厄米特二(来源:ABb7C论文0909网www.abclunwen.com)次型,运用广义特征值分解求解了复杂结构的声辐射模态,然后利用声辐射模态关于阻抗矩阵与均方速度耦合矩阵的正交性,求解了复杂结构的声辐射效率,最后用具有解析解的脉动球与辐射立方体验证了该方法的有效性。

We also studied the probability of modulability of light pulse interval in HLS. In 3 years, we have studied the modulators with the switch of thyratron, IGBT and MOSET etc. They are the comparisons between the waveforms, characteristic tests of ferrites made in China, the driver system of MOSET and the design of kicker magnet with the network mode, which have been studied.

三年来,利用重氢闸流管、IGBT、MOSET等开关的调制器,试验能否这样高重复频率快电流的脉冲功率技术,着重进行了脉冲波形成形比对试验研究,国产高频铁氧体性能测试,MOS管驱动控制与网络型冲击磁铁的设计研究。

The feeding and excretion of three little fishes (Hemiculter. leucisculus, Tilapia. aurea and Cirrhinus. molitorelld) was studied and their effect on water quality of Qiankeng reservoir in Shenzhen City Around the topdown effect of fish was also studied. Based on the analysis of their stomach contents, their diet composition was assayed. The three fishes" feeding rhythm in cage and their rate of digestion indoor were looked into, and their daily ration was estimated through the method of daily average fullness index. Using the spectrophotometer, the content of chlorophyll a in the stomach was measured, and the feasibility of taking the chlorophyll a as an index of measuring the feeding of fish on phytoplankton was studied. Adopting the national standard method, the effect of the three fishes" excretion on total nitrogen, total phosphorus, CODMn, pH, turbidity and conductivity coefficient was surveyed. The effect of feeding and excretion offish on water quality was discussed and the results revealed as follows:H.

围绕鱼类的下行效应,本文以深圳茜坑水库三种小型鱼类Hemiculter leucisculus罗非鱼Tilapia.aurea和鲮鱼Cirrhmus.molitorella为研究对象,以胃含物分析为基础,分析了三种鱼类的食物组成;调查了网箱中自然状态下三种鱼的摄食节律,在室内调查了三种鱼的食物消化速率,运用日平均饱满指数法计算出三种鱼的日粮;采用分光光度法测定了鱼体肠叶绿素含量,探讨了叶绿素作为鱼类对浮游植物摄食量衡量指标的可行性;采用国家标准的水质测量方法,测定了鱼类排泄对总氮、总磷、高锰酸盐指数、pH、浊度和电导率的影响量。

The classical cutting stock algorithm——column generation technology , and wrap up rectangle technology for abnormity are analyzed ; The development of AutoCAD with ObjectARX is studied and the generating method of cutting outline drawing and layout drawing were found out on the basis of analyses of the graph database structure of AutoCAD and the basic operation of it ; The process planning technology of plate material cutting orienting numerical control is studied a process planning method directly based on layout drawing is established ; The emulation technology in AutoCAD is studied and a kind of dynamic emulation method is put forward , which is realized by incrementally modifying graph entity ; The postposition of NC program of the integrated cutting system constructed on software plug-in is proposed , which can effectively solve the problem that it is difficult for a numerical control programming system to be common , which is caused by the difference of instruction format and control parameter between different type of numerical control machine .

分析了经典的矩形件优化排样算法——列生成法和针对异形件的矩形包络算法;研究了基于ObjectARX 的AutoCAD 开发技术,结合对AutoCAD 图形数据库结构及其基本操作的分析,给出了下料轮廓图和排样图的生成方法;研究了板材数控下料加工的工艺处理技术,建立了一种直接基于排样图进行的图形交互工艺规划方法;研究了在AutoCAD环境中的板材下料数控仿真技术,给出一种通过增量修改图形实体对象实现的动态仿真方法;提出以软插件技术构建集成下料系统的数控编程后置处理部分,能够有效解决因数控下料机床指令格式及控制参数不统一导致的自动编程软件系统不易实现通用性的问题。

Coke properties has been studied by high temperature SiC oven、infrared gas analyzer and X-ray diffraction. First set forward the relationship between UPC and coke reactivity, strength, fine coke and coke graphitization, and creatively find the graphitization degree of coke tends to 100% when temp. reaches to 1350℃ UPC is profitableness to coke properties;②The effect of UPC on liquid slag distribution and flow functions in experiment oven has been studied by mathematics simulation The effect of UPC on taking shape and dropping of high titanium-bearing B. F. slag has been studied by using high temp. oven simulation cohesive zone and dropping zone of blast furnace.

为了弄清楚这部分UPC对高炉冶炼钒钛磁铁矿过程的影响,①在实验室利用高温SiC炉、红外线气体分析仪、X—射线衍射仪等进行了一系列UPC对焦炭性能及石墨化度的影响研究,提出了UPC与焦炭反应性、抗压强度、粉化性能及焦炭石墨化度之间的关系,创造性的发现高炉内1350℃以上,焦炭的石墨化度已达100%,UPC对焦炭性能的影响有益而无一害;②采用数学模拟方式研究了UPC对实验炉内液态渣分布及流函数的影响,并利用高温熔滴炉模拟高炉软熔带、滴落带研究UPC对高钛渣滴落性能的影响,采用旋转式粘度计测定滴落渣性能并通过高倍矿相显微镜观察了滴落渣的矿物结构。

The management and quality analysis of the primitive images have been analyzed and studied in this paper, of which the content and structure are as follows:Firstly, the developing background and the meaning of the management and quality analysis of the primitive image, as well as the trends of the management and data quality of the image database studied both in and out of our country, have been discussed in detail.Secondly, the developing direction of the technology of the remote sensing image and the importance of the remote sensing images in the field of economy nowadays have been analyzed systematically. And it is pointed that the primitive image with the elements of interior and exterior orientation will become more and more important as a sort of image production.Thirdly, the hierarchical structure of database, especially the SQL Server adopted in this system, has been deep studied and analyzed in the aspects of Applying Program Interface, Internet Data Connector and ActiveX Data Object.Fourthly, the methods of assessing the quality of the remote sensing image have been put forward in the terms of geometry, construction and the integrality of the assistant information.Fifthly, the model of propagation of errors of the precision of the ground coordinates has been calculated in the steps of inner orientation, spatial resection and answering based on the deep analysis of the principles and processes of inner direction and space resection, which have also been experimented and analyzed in term of numerical value.Finally, the total design and the idiographic realization of the sub-modules have been introduced in detail, based on which the design and development of this system are realized in combination with the program languages such as VB6.0, VC6.0 and SQL.

本文针对原始影像的管理与质量分析进行了深入的研究与探讨,主要内容包括:(1)首先对原始影像管理与质量分析系统的研制背景和意义进行了详细论述,并对影像数据库管理和数据质量研究的国内外动态作了介绍;(2)对遥感影像技术目前的发展趋势以及遥感影像在国民经济生活中的地位进行了深入的分析,并指出附带有内外方位元素的原始影像作为一种影像产品将越来越会引起人们的重视;(3)对数据库的体系结构进行了深入的研究与分析,尤其是对SQL Server数据库的体系结构,从编程接口、Internet数据连接器和ActiveX数据对象三个方面进行了深入剖析;(4)从几何质量、构像质量和附属信息的完整性三个方面提出了对遥感影像质量的评定方法;(5)基于对内定向和空间后方交会原理及过程的深入分析,推导出了从内定向到空间后方交会再到最终求解地面坐标的误差传递模型,并对上述模型进行了数值实验和分析;(6)对原始影像管理与质量分析系统的总体设计和各模块功能的具体实现进行了详细的介绍,并在此基础上联合VB6.0、VC6.0和SQL等编程语言,实现了系统的设计与开发。

The surface activity of Hibiscus syriacus has been studied and shows thatHibiscus syriacus has good surface activity.The influence of temperature,saltness,water hardness and pH on the surface activity of its aqueous solutionsis also studied and shows little influnce.Also the mixture systems of Hibiscussyriacus with some anioic surfactants have been studied and the results show thatthe mixture systems can produce remarkable synergism.

天然表面活性植物木槿叶的应用研究本课题对天然植物原料木槿叶提取物中的表面活性物的性质(临界胶束浓度、表面张力和起泡性能)及其影响因素(温度、pH、水硬度和盐度等)进行了系统的研究,结果表明木槿叶表面活性物具有较好的表面活性,且它的cmc和〓在一定范围内受一些因素的影响也不大,是一种理想的香波原料;同时也研究了木槿叶活性物与其它温和型的阴离子表面活性剂的复配体系,表明具有明显的协同增效效果。

To form multifarious metal composite oxide films on the basis of inorganic salt hydrolyzation process was proposed and studied. The capacitance of Aluminum foils is increases as much as the single inorganic salt hydrolyzation process.The differentia of the first and scend methods is studied. 3.The useness of chelations in solution to deal with etched foils was studied.

由于多元复合介质膜在制备过程中的特点,使得其复合过程与单元阀金属氧化物的复合工艺有明显的差异,本文从机理上阐述了其原因。3、研究了络合化学在处理液配制中的应用:提出并研究了络合剂在处理液配制中的应用,使得处理液在工业生产中维持稳定的性能,提高了工艺的可操作性并取得了良好效果。

This thesis dedicated to research the investment control of BT project, researched the risk in the program construction, the compose portion and the factors effecting the investment. The research includes the conception and the character of the BT project; the actualize process and the questions should be pay attention to; the conditions of BT contract and the sector of the compose poison of the contract price. In this part researched the conception of the BT purchase price and concluded that the relation between the purchase price and the investment. Then studied the risk factors that effect the investment according to the character of the project and then brought forward several advices of the contract item about how to share the risk. Studied compose sector and it's calculatingly methods of the construction cost which is the main part of the investment, then studied how to control the cost during the construct process and analyzed project variations as well as how control that. In the end, researched the capital cost of BT program, the main content include the concept of the capital cost, the calculatingly methods using the engineering economic method, the method writer suggest in the thesis according to the project practice, how to control the capital cost, mainly through setting up an account and inspecting it, and regulating the program financing rate in reason.

本论文的研究重点即BT项目的投资控制,围绕该问题,本论文的主要研究内容有,从BT模式和BT项目的基本分析开始,研究了BT模式的基本概念、BT项目的运作过程、基本特征;研究了BT项目的合同条件和合同价款,该部分分析了BT项目的合同结构、BT项目的承发包工作范围、BT项目的回购价款组成和确定;根据项目建设特征分析了影响BT项目投资的风险因素,并且提出了在对风险进行分配和分担类合同条款制定时建议;建设工程费用是构成BT投资的主体费用,本文对其各组成部分的基本构成、计算方式进行了分析,研究了实施过程中管理控制和工程变更及变更控制的问题;文章的最后对构成BT项目投资的资金成本进行了探讨,分析了资金成本的概念和形成,运用工程经济学的基本理论分析了资金成本各部分的基本计算方式,依据现有的工程实践情况提出了本文建议的计算方式,最后分析了如何对资金成本进行控制――主要通过设立资金账户对其进行监管以及对项目融资的利率进行合理规定。

The effects of several components in the culture medium on Lithospermum erythrorhizon cell growth and secondary metabolite synthesis were studied, as well as structural dynamic model. The two-liquid-phase culture of Lithospermum erythrorhizon was carried out by choosing the proper organic solvent as the second phase. The bioactive carrier for adsorption was prepared and the condition of cell immobilization was determined. We combined the technique of two-liquid-phase culture and immobilization to carry out the culture. We chose the suitable type of reactor, studied its characteristics and results of cell culture using this reactor. The fed-batch operation was also studied on the basis of twoliquid-phase culture and immobilization used in culture in the reactor.

本文研究了紫草细胞悬浮培养中培养基中多种成分对细胞生长与次生代谢产物合成的影响,进行了结构化的动力学模型研究;通过选择合适的有机溶剂对紫草细胞进行了双液相培养研究;通过确定以吸附为细胞的固定化方法,进行了生物活性吸附载体的制备与固定化细胞的制备研究;并结合双液相培养技术,对紫草细胞进行了固定化培养及其动力学模型的研究;对反应器进行选型,并进行冷模与热模研究;在反应器中进行了固定化紫草细胞的双液相培养条件下的流加操作研究。

第2/100页 首页 < 1 2 3 4 5 6 7 8 9 ... > 尾页
推荐网络例句

On closer examination, though, this is not a vote for multilateralism but just the opposite.

仔细审视后我们发现,这并非是对多边主义投出的赞成票,而是恰好相反。

Uncovering their weak spots, so I can defeat them.

揭露出他们的弱点,这样我就可以打败他们了。

Methyl bromides, in C_(3v) symmetry, have been extensively studied at their first absorption A-band because the behavior of these molecules can be used as a prototype for depicting numerous types of photodissociations in a variety of polyatomic molecules.

例如,有很多研究报道了C_(3v)对称的溴甲烷等分子在第一吸收带的光解,这是因为其光解行为可以作为理解其它多原子分光解的原型。