进行中
- 与 进行中 相关的网络例句 [注:此内容来源于网络,仅供参考]
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In order to prove the reliability, test studies have been primarily carried out in the indoor soil bin. The data of the vehicle driving state parameters under the same or different terrain are analyzed. The process curves are compared by different control schemes. The theoretical model of the optimum driving state is reliable and fuzzy control scheme is feasible. The disturbances and unknown factors of control system are analyzed. Test results prove that the half-tracked air-cushion vehicle can drive steadily under control of the computer. At the same time the sensors used to measure soil mechanics characteristics on line need to be developed. And it is the important problem to be solved in the future study. The necessary regulation and correction are put up. So the studies in this paper provide some instruction for the further research work.
为了验证本文提出的最佳工作状态及最佳垫压理论,并分析控制系统的可靠性和稳定性,本文在半履带式气垫车的模型车上,在室内土槽中进行了初步的实车性能和理论验证试验,考察了在同种和不同土壤条件下气垫车的行驶状态参数的测量数据,比较了采用不同控制方法下的过程曲线,验证了最佳工作状态的理论模型和模糊控制系统方案的可行性与可靠性,从而保证了采用自整定模糊PID控制器能够使半履带式气垫车在稳定行驶最佳工作状态下;同时通过试验研究,分析了系统中各干扰与未知因素,对控制方案进行了相应的调整和修正,为今后进一步的研究工作提供了一定的指导。
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The effect of alkaline metal, alkaline-earth metal or rare-earth metal oxides doping to Pd/γ-Al〓O〓 on the properties of supported palladium catalysts were investigated.
研究含氧条件下单Pd催化剂上进行丙烯选择催化还原NO的反应,考察浸渍法制备的Pd/γ-Al〓O〓催化剂中加入碱或稀土金属氧化物助剂对NO转化率的影响,并对催化剂进行了XRD表征及在氧化气氛中饱和吸附NO后的TPD研究。
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Then mainly and secondary risk factor analyze to BOT project on the basis of consulting a large number of materials, choose the main participant based on project of the fuzzy method to carry on quantitative appraisal to it, the result appraised is applied to the concrete research of allocation of risks.
然后在查阅大量资料的基础上对BOT项目中的主要及次要风险因素进行分析,并选择模糊方法基于项目的主要参与方对其进行定量的评价,评价的结果应用于风险分担的具体研究中。
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The research progress on synthetic allopolyploid including type, inducement method and utilization status in crop genetic improvement were summarized, and the feasibility and importance for using it to improve crop varieties were discussed. Finally, the existing problems in relevant researches were analyzed, and the future studies were prospected.
概述了近年来植物人工异源多倍体的研究进展,包括人工异源多倍体的类型、诱导方法及其在植物遗传改良中的应用现状,探讨了利用人工异源多倍体进行农作物品种遗传改良的可行性和重要性,并对相关研究中的问题进行了分析和展望。
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The polymethyl methacrylate material with super-hydrophobic surface of the invention is prepared in the following steps: 1 the polymethyl methacrylate material is first put into diamine solution, so that the ester group on the surface of the material has ammonolysis reaction with diamine molecules; 2 and then, the product of the step 1 is put into long chain fatty acid solution to be treated and the solvent is volatilized, so as to obtain the polymethyl methacrylate material with super-hydrophobic surface.
本发明具有超疏水表面的聚甲基丙烯酸甲酯材料,是按照如下步骤进行制备的:1将聚丙烯酸甲酯材料先置于二胺溶液中使聚丙烯酸甲酯材料表面的酯基与二胺分子发生氨解反应;2然后,将其置于长链脂肪酸溶液中进行处理,挥发掉溶剂,得到具有超疏水表面的聚甲基丙烯酸甲酯材料。
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People are required to know and analyze the operating axes of rotary kiln in time in practice, in order to adjust and maintenance it in reason. So The Great Wall Aluminum Corporation of China bankrolled for studying the microcomputer real-time monitoring system of large-scale rotary kiln and commissioned Central South University to develop it.Based on analyzing and comparing the status quo of the monitoring system of rotary kiln, this paper brings forward a new method of monitoring the operating status of rotary kiln. It analyses the system-error and the configuration and demonstrate the feasibility in detail. In the design of hardware configuration it analyzes the principle and speciality of the tailor-made eddy current transducer and PCI-1713 analog input card and the multilevel supervisory network.
本论文首先在分析和比较同内外回转窑检测系统现状的基础上,首次提出了新的回转窑运行状态检测方法,并从系统误差及可行性角度进行了详细的分析和论证;其次,在监测系统硬件结构设计中,详细地分析了多级管理网络的实现,PCI-1713双缓冲区高速数据采集装置的原理、特点、工作过程,以及针对该系统恶劣的工作环境、特定性能要求而设计的特制电涡流传感器的原理、波形特性及性能特点,及为了减小非线性误差而采用计算机软件进行多段线性插补方法实现误差补偿;另外,在系统软件设计中,详细地分析了高速数据采样软件、智能信号处理软件、系统监测软件的实现,分析了采用模糊自适应滤波方法有效地滤除本系统恶劣环境下的各种干扰因素,并简要地介绍了系统分析软件的功能。
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Studying the chemical balance,energy balance and material balance in the gasification process and probing into the interaction in the gasification process and law of changing offer a theoretical foundation for gasification control. Through the materialization nature of coal, the gasification characteristics of the deoxidize zone are mainly studied (the dynamics characteristics and chemical characteristics). Probing into coz deoxidize mechanism ?establishes the theoretical foundation for the proposition of mark gas;the Principle to adjust and control temperature and applying methods is studied;the physical and mathematical models of underground gasification are set up;A temperature field in the district of gasification is set up and the instance analysis of computer analogue simulation machine has been carried out.
本文通过探讨"三带"基本特征,进而对煤炭地下气化的过程稳定进行研究;研究气化过程中的化学平衡、能量平衡及物料平衡,探讨气化过程中各组分之间的相互关系及变化规律,为气化调控提供理论依据;通过煤炭的物化性质,重点研究还原带的气化特征,分析探讨还原机理,为标志气体的提出奠定理论基础;研究以标志气体为核心的调控升温气化原理及实施方法;建立地下气化的物理模型与数学模型;建立气化盘区温度场,并进行计算机模拟仿真的实例分析。
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The main work and the originality points of this dissertation could be concluded as the following parts:(1) To analyze systematically the mathematical model of LES of air flow in great space, under the case of isothermal and non-isothermal, as well as the combined action of buoyancy and strain. Some basic problems are studied about the LES application into airflow simulation of great space, such as boundary conditions, spatial difference scheme and time advancing scheme, time step etc., which creates the basis for the LES application to indoor airflow simulation.(2) Both the instantaneous and time averaged flow field of great space with multiple jets under isothermal and non-isothermal cases are explored with large eddy simulation method, and also discussed the dynamic characteristics and the law of fluidflow in the great space.(3) Based on the results of LES of the great space and the Fanger thermal comfort indexes, it is brought forward the concept of the series of dynamic thermal comfort evaluating indexes, which could be divided into thermal comfort index with time averaged properties PD, PPD, PMV, thermal comfort index with instantaneous properties IPD, IPPD, IPMV, and time averaged thermal comfort indexes TAPD, TAPPD, TAPMV, and transient situations time averaged thermal comfort indexes TTAPD, TTAPPD, TTAPMV. The differences among them and the calculation methods are discussed, and the four kinds of indexes are calculated with the thermal comfort index PD as an example.(4) Based on the LES results it is discussed the hot air stratification phenomena in air-conditioned buildings in the case with air supply and return registers on the ceiling and the case on the sidewall. The fundamentals of the hot air stratification are studied and the relations of estimating hot air stratification are brought forward.(5) With the advanced apparatus such as hot wire film anemometer IFA300 and laser particle field anemoscope, corresponding model test and site measurements have been done, which are compared with the simulation results and LES is proved a very promising method in air flow simulation indoor.
本文主要工作既创新点体现在以下几个方面:(1)系统分析了等温、非等温和考虑剪切力与浮升力综合作用的高大空间大涡模拟数学模型,并研究了高大空间大涡模拟在室内气流仿真应用中的一些基本问题,如边界条件、空间离散格式和时间推进格式、时间步长选择等问题,为大涡模拟在室内气流计算中的广泛应用打下了基础;(2)首次用大涡模拟方法研究了高雷诺数下高大空间多射流在等温、非等温情况下的瞬时流场和时均流场分布,并探讨了多射流流场的动态特性和流动规律;(3)基于大涡模拟的动态仿真结果和Fanger的热舒适指标,首次系统地提出了动态热舒适评价指标体系的概念:即基于时间平均参数的热舒适指标PD、PPD、PMV;基于瞬时参数的瞬时热指标IPD、IPPD、IPMV;基于时间平均热舒适指标TAPD、TAPPD、TAPMV;以及沿行动迹线的时间平均热舒适指标TTAPD、TTAPPD、TTAPMV,并分析了四类热舒适指标的差异性和计算方法,还以PD值为例对四类指标分别进行了计算;(4)基于数十种工况下空调房间大涡模拟的结果,研究了空调建筑上送上回和侧送侧回两种情况下热分层现象,并探讨了热分层的基本规律,首次提出了避免热分层现象的判断公式;(5)在暖通空调领域,首次使用IFA300热线风速仪、激光粒子速度场仪等先进设备,完成了与大涡模拟相对应的模型试验,并把实测结果与仿真结果进行了对比,说明LES在室内气流仿真方面是一种很有前景的方法。
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An adaptive grid scheme controlling cell area is used to generated grids in the divergent section of symmetric annular nozzle, and the generated grids are used in the flowfield calculation through the uncoupled way. The elliptic equations are used to generate grids in three dimensional regions of FDN divergent section, the source terms used in the equations employ a mathematical form which is independent of the boundary shape and of the boundary grid point distribution, the free parameters contained in the source terms are determined by the two restraint conditions, the intersection angle of transverse grid lines with boundaries and the local curvature of the transverse grid lines at the boundaries, and the interior grid distribution controlled directly by the grid point distribution assigned on the boundaries is realized, it makes the grid more clustering near the nozzle wall. For the generated grids in the whole computational regions have a good smoothness and orthogonality, the accuracy of calculation in the flowfield is ensured.
对轴对称的环形喷管采用控制网格面积的自适应网格方法对扩散段部分进行了网格生成,并通过非耦合方式应用于喷管的流场计算中;对强制偏流喷管扩散段内的三维区域采用椭圆型方程进行网格生成,方程中的源项采用了与边界形状和边界网格点分布无关的数学形式,源项内的自由参数由横向网格线与边界的交角及横向网格线在边界处的局部曲率两个约束条件来确定,实现了由边界上的网格分布直接控制内部的网格点,使壁面附近具有较密集的网格,并且在整个计算区域内的网格都具有良好的光滑性和正交性,从而保证了流场计算的准确性。
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Along with the fluconazole solution density rise,the experimental two kind of strain various glucose density is higher,showe d the glucose consumption are less,takes the logarithmof the medicine de nsity,discovered the logarithm the medicine density and each glucose den sity presents the linear relations;Carries on the analysis comparison to under the fluconazole function two kind of strain linear relations,disc overed the relations of the two strains has the nonuniformity.3 Compare the fluconazole induction reaiatance SC5314 strain and sens itive strain compares,its difference gene expression mainly concentrates in:The code proteinase body and the protein hydroltyic enzyme gene,in the code sugar fat metabolism process is connected the protein gene,the cell cycle correlation gene,the duplication and the translation adjustme nt correlation gene,the stress response correlation gene,the line plast ochondria correlation gene,the cell wall function related gene.4 Candida albicans SC5314 induction resiatance strain was processed b y Xianglian solution,its expression change gene mainly is:Code stress re sponse family protein gene,biomembrane relevant gene,a code proteinase body gene race,code cell cycle related protein gene,duplication and tra nslation adjustment related protein gene.5 The clinical reaiatance strain Candida albicans was processed by Xi anglian solution,its expression change gene mainly is:Codes the hot sho ck protein gene,the serine/threonine protein activating enzyme gene,the proteinase body family gene,the regulation copies and translates the ge ne.
随着氟康唑药液的浓度上升,试验的两种菌株各孔葡萄糖浓度越高,说明葡萄糖消耗越少,经过药物浓度取对数后进行分析,发现取对数后的药物浓度和每孔中葡萄糖浓度者呈现线性关系;对氟康唑作用下的两种菌株的线性关系进行分析比较,发现对两种菌株作用具有不一致性。3氟康唑诱导的耐药SC5314菌株与诱导前的敏感株相比,其差异基因表达主要集中在:编码蛋白酶体及蛋白水解酶的基因,编码糖脂代谢过程中相关蛋白的基因,细胞周期相关基因,转录及翻译调节相关基因,应激反应相关基因,线粒体相关基因,细胞壁功能相关基因。4白念珠菌SC5314诱导耐药株经香莲外洗液作用后,其表达变化的基因主要是:编码应激反应家族蛋白的基因,生物膜相关性基因,编码蛋白酶体基因一族,编码细胞周期相关蛋白基因,转录及翻译调节的相关蛋白基因。5白念珠菌临床耐药菌株经香莲外洗液作用后,其表达变化的基因主要是:编码热休克蛋白基因,丝氨酸/苏氨酸蛋白激酶基因,蛋白酶体家族基因,调控转录及翻译基因。
- 推荐网络例句
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On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.
另一方面,更重要的是由于城市住房是一种异质性产品。
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Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.
气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。
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You rap, you know we are not so good at rapping, huh?
你唱吧,你也知道我们并不那么擅长说唱,对吧?