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系统质量     
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  system quality
     Furthermore, we introduce the feedback control mechanism into the development and evolvement of Web applications, so as to further improve the system quality.
     并进一步引入反馈控制机制,把测试结果反馈给Web应用本身,根据Web应用的实际状况来指导其发展和演化,使得系统质量得到进一步改善。
短句来源
     A Study on Nondestructive Detection and Intelligent Diagnosis Technology of Anchorage System Quality
     锚固系统质量的无损检测与智能诊断技术研究
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     Complex system quality management based on sustainable development
     基于可持续发展的复杂系统质量管理
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     The Analysis of Information System Quality Control Strategies
     信息系统质量控制策略分析
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     Study on Information System Quality Management Based on Customer-driven
     客户驱动的信息系统质量管理研究
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  system mass
     Our results show that the (N/Z) gas/(N/Z) liq increases with the neutron-proton ratio of colliding systems when the system mass, incident energy and impact parameters are fixed.
     如在碰撞系统质量、入射能量和碰撞参数固定的条件下 ,(N Z) 气 (N Z) 液 随碰撞系统中子 -质子比的增加而增加 .
短句来源
     The experiment also shows that system mass flow rate with refrigerant of R290 is less than half of that with R22, and the input power and cooling capacity with R290 also decrease compared to that with R22.However, the energy efficiency ratio is higher than R22 and the system performance with R290 is less effected than with R22 when the operating condition changes.
     采用R290的系统质量流量比R22小一半多,耗能和制冷量也略小,而EER大于R22。 变工况性能实验表明,采用R290后的系统性能受工况变化的影响要弱于R22。
短句来源
     Moreover,higher condensation pressure in the system contributed to lower system mass.
     而较高的系统冷凝压力 ,有利于系统质量的降低。
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     Method According to the characteristics of the operational process of TIMES,the physical and mathematical model for fluid flow,heat transfer and mass composition in its main parts were established to investigate numerically the relation between the system mass and those parameters associated with the structure and operation of the system.
     方法根据热电集成薄膜蒸发废水处理系统工作过程的特点 ,建立其主要部件的流动、传热和质量构成的物理数学模型 ,用数值方法对系统质量与结构参数、操作参数的关系进行研究。
短句来源
     When the main parameters (e. g. support rigidity, distance between bearings, dynamic equilibrum of system mass) are changed, the critical rotative velocity is influenced.
     并求得系统中的某些主要参数(支承刚度、轴承间距、系统质量、动不平衡)变化时对临界转速的影响。
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  systematic quality
     With more learning technology system put into application, systematic quality view and benefit view start to draw more attention.
     随着众多学习技术系统的应用,系统质量观和效益观为人们所重视。
短句来源
     With more learning technology systems put into application, systematic quality view and benefit view start to draw more attention.
     随着众多学习技术系统的应用,系统质量观和效益观也为人们所重视。
短句来源
     On that basis, an integrated hierarchical structure model and a mathematic model for the systematic quality assessment of the geo-environment are constructed and the geo-environmental quality index is calculated. Finally the quality of the study area is evaluated. The results show that on the whole the geo-environmental quality of the Sanjiang plain is good.
     在此基础上,建立地质环境系统质量评价的层次结构模型和数学模型,计算出地质环境质量指数,并对该地区的质量状况进行评价,得出三江地区总体环境地质状况是好的结论。
短句来源
  systematic quantity
     This paper introduced the preparing process and application of underground high-strength liquid concrete system in Tongkuangyu Mine. The preparation, delivery, pouring and operating situation of mine C35 liquid concrete are elaborated, and the compounding ratio design, systematic quantity monitoring and new concrete material development are expounded.
     介绍了铜矿峪矿井下高强度流态混凝土系统研制过程及应用,阐述矿山C35流态混凝土制备、输送及浇注系统的组成及运行情况,并就其配合比设计、系统质量监测及新型混凝土材料开发等技术进行论述。
短句来源

 

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      system quality
    By examples of the design in the input-output relations of control devices with various configurations, the dependence on the configuration of the value of the criteria characterizing the system quality is shown.
          
    Software architecture analysis is a cost‐effective means of controlling risk and maintaining system quality throughout the processes of software design, development and maintenance.
          
    The same model can be used to monitor software system quality decay and thus avoid the need to use the most costly renewal processes.
          
    Software architecture analysis is a cost‐effective means of controlling risk and maintaining system quality throughout the processes of software design, development and maintenance.
          
    The same model can be used to monitor software system quality decay and thus avoid the need to use the most costly renewal processes.
          
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      system mass
    The slope of the high-energy part of the pion spectra varies significantly with the system mass and little with the size of the reaction zone.
          
    The last model III is based on a virtual dissociation of both target and projectile into a proton and another system (mass taken as zero).
          
    in the compound-system mass region of 60 ÷ 80 and by means of the energy time-of-flight telescope and in-beam γ-ray spectroscopy techniques.
          
    The volumetric density of liquid hydrogen is 70.8?kg·m-3, and large volumes, where the thermal losses are small, can cause hydrogen to reach a system mass ratio close to one.
          
    Using the corresponding ergosterol-to-biomass conversion factor of 200, peak fungal mass accounted for 9.2% of total system mass, or 10.2% of leaf dry mass.
          
    更多          
      systematic quality
    We describe a systematic quality control method for large-scale genome oligonucleotide arrays.
          
    A systematic quality control programme carried out by a number of laboratories from the European Union and from EFTA countries is described.
          
    Systematic quality testing indicated reliable winter reconstructions throughout the entire period.
          
    The approach aims to determine key process alternatives with an adequate process capability by systematic quality planning and assessment methods during the initial planning stage of the product development cycle.
          
    Systematic quality control throughout the construction work indicated an average uniaxial compressive strength of shotcrete of 40 N/mm2.
          
    更多          


    The assignment of aberration tolerances for optical systems suffering from wave-front aberrations greater than λ/4 is worth further studying. In this paper it is shown that "low" contrast resolving power of optical systems can be taken as an appropriate criterion for assessing image quality, where the optical transfer function can be evaluated approximately in terms of the sums of Legendre polynomials. Accordingly, the best program of aberration correction and tolerences in the case where certain aberration...

    The assignment of aberration tolerances for optical systems suffering from wave-front aberrations greater than λ/4 is worth further studying. In this paper it is shown that "low" contrast resolving power of optical systems can be taken as an appropriate criterion for assessing image quality, where the optical transfer function can be evaluated approximately in terms of the sums of Legendre polynomials. Accordingly, the best program of aberration correction and tolerences in the case where certain aberration constants are inevitably present and others are adjustable in optical design can be obtained. The results so obtained as applied to aberrations of small magnitude comparable to λ/4 conform well to the Strehl Deffinitionshelligkeit method.

    具有大象差的光学系统象差公差问题一直还未得到很好解决。本文中提出以低对比分辨本领作为光学系统的质量指标,并将光学系统的传递函数近似表示为正交多项式之和,象差任意大小的光学系统的最佳校正方案和公差之值就可以求出。在小象差情况下,所得的结果与Strehl判断的结果基本一致。

    This paper describes the optical principles,methods of usage,precautions and applications in testing of astronomical optical surfaces by means of,an interferometer, the source of which is a He-Ne gas laser tube.Some merits of this method are therein pointed out. At present,this apparatus is used mainly for the examination of the perfectness of convergent spherical wave surface with aperture angle≤1:3,hence it can be used for the non-contact direct test of aluminized or unaluminized concave mirrors with any aperture.In...

    This paper describes the optical principles,methods of usage,precautions and applications in testing of astronomical optical surfaces by means of,an interferometer, the source of which is a He-Ne gas laser tube.Some merits of this method are therein pointed out. At present,this apparatus is used mainly for the examination of the perfectness of convergent spherical wave surface with aperture angle≤1:3,hence it can be used for the non-contact direct test of aluminized or unaluminized concave mirrors with any aperture.In combination with supplementary mirrors one can test flat mirror,various aspherical mirrors used in astronomical telescopes,homogeneity of medium(e.g.op- tical glass),quality of optical systems,state of optical axis alignment and assembly deformations.With this interferometer one can also determine the wave surface dif- ferences of an objective with the laser wavelength presently used(6328.(?))and mea- sure some aberrations.

    本文叙述了用氦氖气体激光管做为光源的干涉仪光路原理、使用方法、注意事项及在天文光学镜面制造中的应用.该仪器现在专用来检验张角≤1:3的会聚球波面的完善性.因此可以用来无接触的直接检验任意口径的镀铝或未镀铝的凹球面镜;加入辅助镜后可以检验平面镜、天文望远镜用的各种非球面镜、介质(如光学玻璃)的均匀性、光学系统的质量、光轴校正及安装变形情况;也可给出物镜对于现用激光波长(6328)的波面差及测出某些象差.

    In this paper, we describe three kinds of diffraction-based quality criteria for optical system assesment, which are adopted as the merite function for automatic lens design. The criteria are: a) the average deformation of wave-fronts; b) the derivative of wave aberrations; c) the geometrical optical transfer function. Hence the related calculating formulas have been simplified. Practice have shown that this merite function can be used not only for the initial step of aberration balance, but also for the accurately...

    In this paper, we describe three kinds of diffraction-based quality criteria for optical system assesment, which are adopted as the merite function for automatic lens design. The criteria are: a) the average deformation of wave-fronts; b) the derivative of wave aberrations; c) the geometrical optical transfer function. Hence the related calculating formulas have been simplified. Practice have shown that this merite function can be used not only for the initial step of aberration balance, but also for the accurately correcting process, with the purpose to abtain the optimal aberrations balance.

    本文描述了三种基于衍射理论(或称为衍射基)的光学系统质量指标作为透镜自动设计的价值函数的方法。这三种指标是:1.波差方差;2.波差导数;3.几何光学传递函数。得到了简化计算的相应公式。实践证明,这种价值函数不但可用于象差平衡的开始阶段,更可用于象差的精细校正过程,以获得象差的最佳平衡方案。

     
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