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特征截面     
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  characteristic section
     Secondly, all the operating conditions simulated numerically by adopting the commercial soft CFX4.3 and then the temperature distributing data on the characteristic section in hearth were obtained, so using the data as sample to train and test the integrated adaptive fuzzy-neuron network, which is the base of the dynamic displaying 2-dimension temperature field model between the combustion system input-parameters and the temperature data.
     然后应用商业软件CFX4.3对所有燃烧工况进行数值仿真,获得特征截面上的温度分布数据,继而在燃烧系统输入参数与特征截面温度分布数据之间建立一个基于集成自适应模糊神经网络的炉内二维温度场动态显示模型,用数值仿真结果作为样本对该网络进行训练和检测。
短句来源
  special section
     The tracer test of hydraulic characteristics in ABR was studied and the effects of special section on hydraulic characteristics in ABR were analyzed. Residence time distribution(RTD) method was used to investigate hydraulic characteristics of ABR under different feed and HRTs conditions. The results are as follows:RTD-curve of ABR under different influent COD concentration was similar,showing that the hydrodynamics of reactor did not appear to be influenced by changing the influent COD concentration;
     对ABR反应器的水力流态进行了示踪剂试验,分析了特征截面面积对ABR水力特性的影响,采用停留时间分布(RTD)法研究了不同进水COD浓度和HRT条件下ABR反应器的水力特性,结果表明:不同进水COD浓度时ABR反应器的RTD曲线相似,表明进水COD浓度不是影响ABR水力特性的主要因素;
短句来源
  feature section
     Using this model, the paper studies the affection of the change of the bore diameter in each feature section to the initial velocity of projectile, and the relationship between the initial velocity of projectile and the total change of the bore diameter.
     并用该模型研究了各特征截面内径改变量对弹丸初速改变量的影响,以及弹丸初速改变量与总内径改变量间的关系。
短句来源
  “特征截面”译为未确定词的双语例句
     (2)the buckling performance of the YBT model not only possess both properties of elasticity and plasticity, but also the interlaced distributions possible appear on the elastic and plastic stress points;
     ③YBT模型以及所有处在不均匀拉应力场作用之下的板料所发生的皱曲失稳,均具有弹性失稳、诱发性弹性失稳和塑性失稳三重性质; ④整个模型的皱曲失稳决不仅仅只是与特征轴或特征截面上的不均匀应力应变相关,而是模型全场的应力应变不均匀传播和分布作用的结果。
短句来源
     Based on the experimental results, shear lag coefficient and effective width coefficient distribution of steel box- concrete composite beam with external prestressing tendon under different loading levels are studied, which may be considered as the foundation of the total process calculation under flexural load.
     在试验研究的基础上,分析了体外预应力钢箱—混凝土组合梁特征截面剪力滞系数和有效分布宽度系数随荷载的变化规律,可作为体外预应力钢箱—混凝土组合梁承载力全过程分析计算的基础。
短句来源
     In this paper, firstly studying the temperature distributing status in a boiler's hearth, confirming a normal operating condition on the base of actual measure operating conditions, adopting statistic soft—SPSS11.5 to design the normal operating conditions by the orthogonal test way and then obtaining multi-combustion operating conditions.
     本文深入研究了锅炉炉内温度场的分布状况,在实测工况基础上确定一个基准工况和一个炉内特征截面,采用SPSS11.5统计软件对基准工况进行正交试验设计,获得多组燃烧工况的参数。
短句来源
     The testing result indicates that this model can be used to display the distributing temperature dynamically with higher precision, and satisfies the on-line and veracity commend of the diagnosis system for boiler's running.
     其结果表明该模型能够以较高的精度动态显示炉膛内部特征截面上的温度分布状况,可以满足故障诊断系统的实时性和准确性的要求。
短句来源
     Both of the methods of simulation and experiment were adopted in order to acquire the distribution of temperature field and velocity field as well as solar radiation value.
     然后,在实验室内部选取特征截面,并在截面上布点进行实测,得到温度场、速度场的分布以及太阳辐射值。
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      special section
    A special section discusses the relationships of plant proteinase inhibitors and storage proteins.
          
    A special Section is devoted to the development of GEM-based gas photodetectors.
          
    Examples of associations of apoptosis and diseases are presented in a special section.
          
    A special section is devoted to some issues of using antimutagens in context of genetic polymorphism.
          
    All authors use only one additional section with a taxon for minerals consisting of metals only, whereas none of these authors uses a special section with minerals consisting of nonmetal chemical elements only.
          
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      specific cross-section
    This gives the width of one side of the 2D panel for this specific cross-section, with respect to its central, axial line.
          
    The latter can be considered as an equivalent specific cross-section for the equivalent wavelength of the aethalometer, which is about 550 nm.
          
      feature section
    To help readers gain the relevant background knowledge and to better understand the other reviews in this Feature Section on the clinical applications of RFA in different abdominal organs, the present report covers the general aspects of RFA.
          
    Feature Section, Radiofrequency Tumor Ablation, Under The Guest Editorship of A.
          
    This introductory article sets the scene for this Feature Section in Abdominal Imaging consisting entirely of short "Critically Appraised Topics" produced using EBP techniques.
          
    Feature section, evidence-based practice in abdominal imaging, under the guest editorship of D.E.
          
    This feature section was designed to provide the detailed imaging features of common parasitic diseases affecting the abdominal organs and peritoneal cavity, based on pathology-image correlation.
          
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    This paper presents the test plan, the results of the station parameters measurement for a typical turbojet engine and the analysis of measurement results. The parameters of the flow fields of the engine characteristic stations at design point are recorded; and the gasdynamic parameters of the engine stations, the main process parameters, the component loss coefficients and engine performance are calculated, and their reliability and accuracy analyzed. Then, the parameters of the engine characteristic station...

    This paper presents the test plan, the results of the station parameters measurement for a typical turbojet engine and the analysis of measurement results. The parameters of the flow fields of the engine characteristic stations at design point are recorded; and the gasdynamic parameters of the engine stations, the main process parameters, the component loss coefficients and engine performance are calculated, and their reliability and accuracy analyzed. Then, the parameters of the engine characteristic station at design speed are recorded with the relative corrected speed ncor varying from 0.96 to1.023 as ambient temperature' varies, while the corresponding parameters and coefficiencies of each station are plotted as function of relative corrected speed ncor. Furthermore, engine parameters are recorded for various speeds, nozzle areas, and with or without compressor bleeding as the engine is operated under various throttle conditions.The method of parameters measurement for the bench test of engine is also discussed in this paper. Accurate average parameters of engine can be obtained through proper layout of measuring points and appropriate data processing according to the features of the flow fields.

    本文介绍了一典型的涡轮喷气发动机全流程参数测量的试验方案、测试结果及分析 。首先测定了发动机在设计状态下各特征截面的流场参数,计算了发动机各截面的气动参数、主要过程参数、部件损失系数和发动机的性能参数,并分析了它们的可靠性和精确性.其次测定了在设计转速下,当大气温度变化,而使相对换算转速在0.96至1.023范围内变化时,发动机各特征截面的气动参数.并将各对应的参数与系数按与相对换算转速的函数关系画成了曲线.测定了发动机在节流状态工作时不同转速、不同喷口面积、压气机放气或不放气时的各种参数. 本文还讨论了整台发动机台架试车的参数测毽力法,根据流场特点合理布置测点,适当处理数据,获得较精确的发动机平均参数等方面的问题.

    The effects of Made three centres (weight centre) torsion centre, the centre of aerodynamics loads) on flutter instabilities have been researched in this paper. In theoretical analysis, the structure model of the coupling between the bending and torsion degrees of freedom is presented, on the basis that the aerodynamics loads are a function of the displacements of blade vibration, it is considered that the aero-loads are a function of the velocities of blade vibration. The complex eigenvalue equations are resovled...

    The effects of Made three centres (weight centre) torsion centre, the centre of aerodynamics loads) on flutter instabilities have been researched in this paper. In theoretical analysis, the structure model of the coupling between the bending and torsion degrees of freedom is presented, on the basis that the aerodynamics loads are a function of the displacements of blade vibration, it is considered that the aero-loads are a function of the velocities of blade vibration. The complex eigenvalue equations are resovled in an iteration way.Results of this paper are that the blade of forward torsion centre has a less stability than backward, the blade of forward weight centre and torsion centre. As far as the blade of backward torsion positions concerned, the blade will be unstability when centre of unsteady aerodynamics loads is at the position between weight centre and torsion centre.It is shown, by three different kinds of blade, the best aero-loads centre position is at leading edge locus of blade.

    本文研究了叶片三心,即重心、扭心和气动力中心对颤振特性的影响。列出了叶片特征截面上叶片型面的弯扭耦合动力方程,计人与位移和速度成线性函数的气动载荷,求解方程并研究了三心与颤振特性的关系。 结果表明,扭心靠近前缘的叶片比扭心靠后的更易起颤;前置重心对稳定性有很大改善;对前置扭心,非定常气动力心位于重心、扭心之间较为稳定,而移至重心之后就易于稳定;但对于后置扭心,气动力中心位于重心、扭心之间也将失稳,而最好气动中心靠近叶片的前缘处。

    A cascade with the end wall diffusive angle 50* is adapted to measure the existence of the end wall large-scale separation of the steam turbine last stage at the low-volumetric flow. The experimental results demonstrate that there exist the separation on the blade basin and the interaction between the horseshoe votex and the passage vortex near the diffusive end wall, instead of the large-scale separation. And the experiment also proves that the methods by taking the characteristic section for predicting the...

    A cascade with the end wall diffusive angle 50* is adapted to measure the existence of the end wall large-scale separation of the steam turbine last stage at the low-volumetric flow. The experimental results demonstrate that there exist the separation on the blade basin and the interaction between the horseshoe votex and the passage vortex near the diffusive end wall, instead of the large-scale separation. And the experiment also proves that the methods by taking the characteristic section for predicting the blade flutter are still effective,but meanwhile the influence of the secondary flow should be considered. The separation on the steam turbine inner end wall has altered the aero-dynamic work distribution. To avoid the arbitrariness at taking the characteristic section while predicting flutter, some ideas on improvment of the stall flutter calculation mo lel are suggested in this paper.

    本文采用端壁带扩张角(50°)的平面叶栅,模拟汽轮机小容积流量工况外环壁附面层是否出现大尺度分离。实验结果表明,大扩张角的端壁附近叶盆上有分离团,端壁上只有马蹄涡及其与通道涡的相互作用,并未出现大尺度的分离团,说明采用取特征截面的方法预测叶片颤振仍然有效,但需进一步考虑二次流的影响。汽轮机内环失速区的存在改变了叶片上气动功的分布,为了消除预测颤振时取特征截面的任意性,对失速颤振计算模型提出了改进意见。

     
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