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By the Tianjin office in project management in agricultural science and technology commission, Tianjin Fisheries Bureau Group of Experts on June 12, 2008 of the City Fisheries Research Institute, Chinese Academy of Fishery Sciences of the Yellow Sea Fisheries Research Institute to bear in agricultural science and technology cooperation projects in Tianjin,"the sea bay Production quality control of the whole technical system model "on-site inspection, the Group heard a report on the project team, view the relevant information, visited the Tianjin Co., Ltd.oyster aquaculture breeding farms purification facilities and test factory production.
受天津市农业科技项目管理办公室委托,天津市水产局组织专家组于2008年6月12日对市水产研究所、中国水产科学研究院黄海水产研究所承担的天津市农业科技合作项目《海水贝类生产全程质量控制技术体系示范》进行了现场验收,专家组听取了课题组的项目汇报,查看了相关资料,考察了天津神堂水产育苗养殖有限公司牡蛎工厂化净化设施和试生产情况。
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Then studied on several clays affect on the stability of ferrate solution. The results show the addition of clays retarded the decomposition of ferrate in alkaline solution. Through analysed the results of test, we found this due to the silicium or polysilicium of clays and its increasing stabilizing effect on ferrate when the concentration of silicium or polysilicium increases.
接着作了粘土对高铁酸盐溶液的稳定作用的研究,结果表明粘土对高铁酸盐溶液有良好的稳定作用,通过实验分析得到其稳定作用是由于粘土中溶出的硅酸根或多聚硅酸根所致,且随着其浓度的增加对高铁酸盐的稳定作用增强。
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In this thesis, I summarize the theoretical calculation method, applied scope and notice of siphonic drainage system, and point out the advantage of siphonic drainage system compared with gravitation drainage system. In the archetype experiment study of siphonic drainage tube, I adopt different tube diameter and different structural height to survey the drainage volume and press in different place. I observe various kinds of flow state, and get chief factors which influence hydraulic peculiarity of system as the tube diameter or structural height, and find out the relevance of factor to flux. I apply CFD Fluent software and adopt standard k-ε model and RNG k-ε model, then use finite volume method and second-order upwind scheme to discrete numerical model, while coupling numeration of velocity field and press is based on SIMPLE. In the numerical simulation of curved part of tube, siphonic drainage tube experiment system and multi-outlet siphonic drainage system, I make research on internal velocity and press of system in different project condition by changing the tube diameter of curved part, negative press value in tube export and improving the quantity of water gutter. This thesis first adopts a method of combining archetype experiment and numerical simulation to study the siphonic drainage system, test and verify the validity of experiment and numerical simulation, and makefurther study on system, it solves the problems of limited testing conditions, and has a logical results, it can provide a valid method for optimizing and designing the drainage tube-net system. The conclusion have referring value for study and design of siphonic drainage system.
本文首先对虹吸式排水系统理论计算方法、适用范围以及注意事项做出总结,并分析了虹吸式排水系统的优势;再对虹吸式排水管道进行原型试验研究,采用不同管径不同立管高度,对系统流量、管道压强进行量测,观察了各种工况下的流态,对其水力特性进行研究分析,找出影响水力特性的落差、管径主要因素以及与排水量的关系;进一步应用计算流体力学Fluent软件,采用标准κ-ε模型与RNGκ-ε模型,计算过程应用有限体积法和二阶迎风格式对数值模型进行离散,速度和压力的耦合采用SIMPLE算法,分别对系统弯管段、虹吸排水管道试验系统、多斗虹吸式排水系统进行数值模拟分析,通过改变管段弯头处半径、管段出口负压值、增加雨水斗数对不同工况下系统内部的速度和压力进行研究;本文首次采用结合原型试验与数值模拟相结合的方法,对虹吸式屋面雨水排水系统进行研究,试验与模拟相互验证,并进行拓展,很好地解决了虹吸式屋面雨水排水系统由于试验条件限制问题,结果正确合理,为排水管网系统设计和优化研究提供了有效的方法,对工程设计有较好的参考价值。
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In the part of the vibration experiments and analysis, firstly, used the simple-beam theory to estimate the natural frequency of the beam of the 20-headed computerized embroidery machine.secondly, measured the beam of its low rank natural frequency, the beams horizontal vibrating acceleration amplitude, speed amplitude and the displacement amplitude in different rev and different turn parts. Found that it is sympathetic vibration, which bring on the thread-broken rate rise rapidly. On this base, established the finite element analysis modle of the vibrating beam, and took on hamonic analysis and modal analysis with the mold. The rusult of test and analysis offer the basis for farther improvement of the computerized embroidery machine.
振动分析部分,首先由简单梁理论出发,对横梁的固有频率进行估算;接着通过测振仪器对20头电脑刺绣机横梁进行了试验模态分析和不同工况振动测试;获得了横梁前四阶固有频率和模态振型,以及在不同工作转速、不同回转部件下横梁振动的加速度幅值、速度幅值和位移幅值;找到了横梁振动加剧的原因——共振;在此基础上建立了符合实际情况的横梁有限元模型,对模型进行了模态和谐响应计算,证实了模型的可靠性,为下一步的改进设计提供了依据。
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The key of this task is how could we get the orderliness of train traveling signal. There are some introduction to the analyse ways of train's approaching signal. It emphasizes on the analyse of using syntony demodulation technology to final the long-distance coming train. At the same time, it gives a preliminary analyse in the signal for different cases, takes a research on the identified technology for the coming train, designs and assembles the hardware and software of this system. All of them have got past the test on the spot and got a satisfying result""
课题中的关键是如何得到列车运行信号的特征规律,在本文中对这些列车接近信号的一些分析方法作了介绍,着重分析了采用共振解调技术发现远程来车的信号,同时针对不同情况下的信号进行了初步分析,研究了来车的识别技术,并对系统的软硬件进行了设计和组装,通过了现场试验,得到了令人满意的结果
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In this paper, the flow properties of helicopter landing and taking-off region and its influence on flight safety are introduced first, then the flow of flight deck is simulated using finite element method on the basis of Navier-Stokes equations, and the simulated results are compared with test results. The helicopter flight properties on flight deck is discussed, and it is point...
本文首先介绍了直升机舰载起降区域的气流流动特点及其对飞行的影响,然后以纳维—斯托克斯方程为基础,利用有限元法对甲板区域的气流流动进行了仿真计算,并将仿真结果与实验结果做了对比,分析了直升机在该甲板区域内的飞行特点,指出应重视流场对飞行安全的影响。
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Bond strength may be an easy way to test: If the cover page with a coating material or fabric, and so on and Board bond, of post-drying in bond over time, will cover material on jeyang to pull apart, should be able to bring push-out of cardboard surface tear tape, books and cover bond tore post-drying reached does not open or a leaf out of another layer of still being bonded on it, you can achieve the requirements.
黏结强度可用下述简单方法测试:如封面用涂布类材料或织品等与纸板黏结,在黏结干燥后的一定时间,将封面料揭撕开时,应能把被黏结的纸板表面也撕带下一层,书册与封面黏结干燥后达到撕不开或撕下一层,而另一层仍被黏结在上面,即可达到要求。
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Considering the specialty of pseudo-random vector, a partial scan algorithm for BIST, which unifying the structure analysis and testability analysis, is presented in this paper. Then, the fault simulation experiments on ISCAS89 benchmark circuits by this algorithm is made, and the results, which made by the full scan algorithm and the partial scan algorithm only based on the structure analysis, is compared. The conclusion is achieved: for pseudo-random vector, compared with the full scan circuit and the circuit geted by partial scan algorithm only based on the structure analysis, the circuit geted by our partial scan algorithm can greatly reduce the test time with very close or even greater faults coverage and less area than the full scan.
考虑到伪随机测试向量的特殊性,本文借鉴确定性测试向量生成的部分扫描算法,在内建自测试环境中,提出一种综合结构分析和可测性分析的部分扫描算法,PSBAST,并运用此算法对ISCAS89 benchmark电路进行计算,并对经计算后得到的部分扫描电路进行故障模拟,最后将模拟结果与全扫描电路和一种仅考虑结构因素的部分扫描算法得到的结果进行详细分析和比较,结果表明:对于伪随机测试向量,相对于全扫描电路和由仅考虑结构因素的部分扫描算法得到的电路,本文提出的部分扫描算法得到的电路,能够在不低于全扫描结构故障覆盖率前提下,大幅度减少测试时间,并能降低测试面积开销。
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When you ask so many questions that your mom does not know how to answer While you sit at the front of your mom's bike When you jump into water while your dad is not watching you While you do not know how to swim and cry to ask for your dad's help When you are proud of yourself as your teacher visiting your home While most of your classmates are fear of your teacher's home visiting You are in the first decade of your life When you start to compete at school after taking your parents' suggestion As you know studying hard is the only way to change your life When you are lazy on-campus while not at home As you want to be different to your classmates When you are dreaming to move to your capital for further study As you want to get into the best school in the nation You are in the second decade of your life When you are surprised there are so many smart classmates around you After you leave your hometown and ride on your bike in the most beautiful campus When you start to treat English like your native language After you see so many schoolmates go abroad by passing English test When you are in a plane for the first time heading towards a strange land After your pass so many tests and contact so many professors You are in the third decade of your life When you surprises your peers who say why Chinese are so smart When you are out of joy after owning your first used car When your local roommate asks for a coffee after coaching you on how to drive When your advisor complains you are running too fast When you turn down one job offer and go for another When you work in the industry as a CEO-under-training You are in the third decade of your life When your customer becomes your boss When your freedom becomes your burden When your daily job is to create jobs When you nightly job is to create poems When no town becomes your hometown When no land becomes your homeland You are in the fourth decade of your life How many decades have you gone through?
十年 当你问这么多问题,你的妈妈不知道如何回答当你坐在前面的你妈妈的自行车当你跳入水中,而你爸爸不是看着你虽然你不知道如何游泳,并大声呼喊请你爸爸的帮助当你感到自豪的是自己作为你的老师您的家庭访问虽然大多数的同学都担心你的老师的家访您是在第1个十年的生活当您开始在学校的竞争后,你的父母的建议如你所知勤奋学习是唯一的方法来改变你的生活当你懒惰的校园虽然没有在家里如您想成为不同,你的同学当你梦想转移到你的资本,为进一步研究如您想进入最好的学校在全国您的第2个十年的生活当你感到惊讶有这么多聪明的你周围的同学当您离开您的家乡,你骑自行车在最美丽的校园当您开始像对待你的英语母语当您看到这么多同学出国通过英语测试当你在飞机第一次走向一个陌生的土地您传球后这么多的试验和接触这么多的教授您的第3个十年的生活当您惊喜您的同行说,谁,为什么中国如此聪明当你的喜悦当你自己你的第一个二手车当你的室友问当地的一个咖啡教练后,您就如何推动当您的顾问抱怨您正在运行速度太快当您打开了一个工作机会并转到另一个当您工作的行业作为一个首席执行官下训练您的第3个十年的生活当你的客户成为你的老板当你的自由成为你的负担当您每天的工作是创造就业机会当你每晚的工作是撰写诗歌如果没有城市成为您的故乡如果没有国家成为您的祖国您的第4个十年的生活几十年来多少,你经历?
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Xintai Group is the company which monitored by "OPCW"(Convention on the Prohibition of the Development, Production, Stockpiling and Use the Chemical Weapons and on their Destruction) and "China Controlled Chemicals Association", own the "Production License of the Regulations of the People's Republic of China on Supervision and Control of Chemicals", is one of the leading manufacturer of Sodium Cyanide and Tert-Butylamine in home, and is the only manufacturer that producing Hydrocyanic Acid and Solid Sodium Cyanide by using method of "Anes Test " in home.
鑫泰集团属于&国家禁化武公约&和&中国监控化学品协会&监控的企业,拥有《监控化学品生产特别许可证》和《安全生产许可证》,是国内生产叔丁胺和氰化钠的主要厂家之一,是国内安氏法生产氢氰酸进而生产固体氰化钠的唯一厂家。
- 推荐网络例句
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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。
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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
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The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.
血精的原因很,以良性病变为主。