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边际     
相关语句
  marginal
     Prediction of Marginal Electricity Price for Power Market and Research on Model of Competitive Price for Listing Power Network of Hydropower Plant
     电力市场边际电价预测与水电厂竞价上网模式研究
短句来源
     Petroleum Geology of Niger Delta and Evaluation of the Hydrocarbon Potential in Stubb Creek Marginal Oil Field
     尼日尔三角洲油气地质特征与Stubb Creek边际油田含油气潜力评价
短句来源
     The Rise of the Marginal Utility School,1870-1889.By R.S.Howey.
     荷威:《边际效用学派的兴起,1870-1889》
短句来源
     To Explore Optimal Production Ability and Best Economical Advantage for a Pit With Aid of the Theory of Marginal Analysis
     用边际分析理论探讨生产矿井最佳生产能力和最大经济效益
短句来源
     The Application of Microwave Gunn Marginal oscillator for the Measuremet of Dielectric Constant
     微波耿氏边际振荡器在测量介质介电常数等的应用
短句来源
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  margin
     The forest suitability evaluatation result shows that the area of the highly suitable, the medium suitable, the margin suitable and unsuitable forest land in the study area are 1579.86km2 > 4455.23 km2^ 2534.83 km^ 1153.11km2, and take 16.2°/^ 45.8%^ 26.1%^ 11.9% of evaluatation land gross area.
     林地适宜性评价结果表明:研究区内高度适宜、中等适宜、边际适宜和不适宜林地面积分别为:1579.86km~2、4455.23km~2、2534.83km~2、1153.11km~2,分别占参评土地面积的16.2%、45.8%、26.1%、11.9%。
短句来源
     Net profit with nitrogen level of 150 kg/hm2 was largest (13.91 % ), while margin cost reward rates and nitrogen agronomic efficiency with nitrogen level of 75 kg/hm2 was highest.
     以不施氮为对照,施氮量在150 kg/hm2时,新增纯收益最大(为13.91%),而施氮量在75 kg/hm2时,则可取得最高的边际成本报酬率及氮肥农学利用率。
短句来源
     The result shows: the highly suitable, the medium suitable, the margin suitable and unsuitable farming land's area including: 356180 hectares, 1485148 hectares, 808929 hectares, 29568 hectares, the proportion they take is: 13. 29%, 55. 42%, 30. 19%, 1. 1%.
     评价的结果表明:研究区高度适宜、中等适宜、边际适宜和不适宜耕地面积分别为:356180ha、1485148ha、808929ha、29568ha,占研究区耕地的比例分别为:13.29%、55.42%、30.19%、1.1%。
短句来源
     The highest yield of 7716.7 kg/hm 2, water use efficiency of 15.92 kg/(hm 2·mm), margin efficiency of 43.12 kg/mm and average yield increment per irrigation of 851.65 kg/hm 2 all was achieved in irrigation treatment with three irrigations: before over winter, jointing, and flowering.
     全生育期浇越冬水、起身拔节水、开花水的处理经济产量最高 ,达到 771 6.7kg/hm2 ,水分利用效率最大 ,达到 1 5 .92 kg/(hm2· mm) ,单位水资源量的边际效率也最大 ,达43 .1 2 kg/mm,单次灌水的最大平均产量为 85 1 .65 kg/hm2。
短句来源
     The Analysis on the Margin of Safety of GSM Wireless Network Capacity
     GSM无线网络承载能力安全边际分析
短句来源
更多       
  electric marginal
     Research of Models on Short Time Electric Marginal Price Forecasting
     短期边际电价预测模型研究
短句来源
  run marginal
     PROBABILISTIC FORECASTING OF SHORT RUN MARGINAL COST OF POWER GENERATION UNDER ELECTRICITY MARKET
     电力市场短期发电边际成本的概率学预测
短句来源
     In this paper we study the method for determining the long run function under the condition of homogeneous production function. We prove that the long run cost function is a power function of output, and point out the special relationship between long run marginal cost function and long run average cost function.
     文章研究一般性齐次生产函数条件下长期成本函数的确定方法,证明了长期成本函数是关于产量的幂函数,并指出了长期边际成本函数和长期平均成本函数之间的特殊关系。
短句来源
     In a transmission system the market efficiency can be achieved under the economic dispatch based on short run marginal cost(SRMC)methods ,but the capacity returns are serious inadequate as its economics of scale and scope.
     以短期边际成本原理为基础的经济调度可以保证市场效率 ,但由于规模 (scale)经济性和范围 (scope)经济性使输电投资的容量回报严重不足 ;
短句来源
     Based on short run marginal cost method the uniform clearing price for pool purchase includes the shadow capacity cost, but it is not sufficient when the economic of scale exists and cannot be neglected.
     广为采用的优良排序统一出清电价的短期边际成本方法可以保证市场效率 ,但是 ,在规模经济性条件下 ,该方法使投资成本不能充分回报 ,这正是国际上多数电力市场开放后投资疲软的深层原因。
短句来源
     The line congestion essentially reflects the shortage of transmission capacity, but the shortage of transmission capacity cannot be sufficiently reflected by the traditional short run marginal cost (SRMC) pricing method.
     输电阻塞本质上是输电容量的不足。 传统的短期边际成本输电定价方法使网公司的收入严重不足 ,相应电价也不能给出充分反映输电容量不足的信号 ,而输电当量电价却有独特优势。
短句来源
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      marginal
    This paper considers how to find some joint distributions and their marginal distributions of crossing time and renewal numbers related to two PH-renewal processes by constructing an absorbing Markov process.
          
    Let (X1,X2,…,Xn) and (Y1,Y2,…,Yn) be real random vectors with the same marginal distributions, if (X1,X2,…,Xn)≤c(Y1,Y2,…,Yn, it is showed in this paper that Σi=1nXi≤cxΣi=1nYi and max1≤k≤nΣi=1kXi≤icx max 1≤k≤nΣi=1kYi hold.
          
    The text area was extracted after preprocessing such as skew correction and marginal noise removal.
          
    Eco-emigration and the return of marginal agricultural land to forestry can be practiced.
          
    The impacts of fractal dimensions on the soil properties were analyzed with the elasticity analysis and marginal yield analysis.
          
    更多          
      margin
    Because of the existence of nanopores, the dielectric constant of PI films decreased by a wide margin and was less than 2.0 at a PU mass fraction of 20%.
          
    EBM generalizes the logistic regression to the semi-supervised case, and especially, it can naturally represent the margin.
          
    For the new test data, we present the prediction formulation, and explain how the margin model affects the classification boundary.
          
    Distribution, migration and derivation of Mesozoic-Cenozoic regional fault systems in the central continental margin of eastern
          
    Deep-large faults in the central continental margin of eastern China are well developed.
          
    更多          
      run marginal
    Toobtain the resource rent to which the rule applies, the shadow value ofcapacity must be subtracted from the usual net price, i.e., price lessshort-run marginal cost.
          
    Some problems of estimating the long-run marginal costs of electricity A vintage capital approach
          
    The parameters of interest are the short and long run marginal propensities to consume (MPC) and the long run average propensity to consume (APC).
          
    I show that at the optimal size of capacity, expected short-run marginal shortage cost and long-run marginal capacity cost should be equal.
          
    Average variable cost is often used as a proxy for short-run marginal cost in empirical studies of manufacturing firm behaviour.
          
    更多          


    In this paper the propagation of pulse wave on and the mutual coupling between conductors of a multi-conductor transmission system are analysed from the basic voltage and current equations. It is found from the analysis that on a completely transposed double-circuit three-phase system there will exist four pulse waves of different velocities originated from a system disturbance, and accordingly there will be four different values of the characteristic impedance. With these relations obtained, some peculiar phenomena...

    In this paper the propagation of pulse wave on and the mutual coupling between conductors of a multi-conductor transmission system are analysed from the basic voltage and current equations. It is found from the analysis that on a completely transposed double-circuit three-phase system there will exist four pulse waves of different velocities originated from a system disturbance, and accordingly there will be four different values of the characteristic impedance. With these relations obtained, some peculiar phenomena of pulse wave propagation on lines can be explained, and the distortion, reflection, and refraction, etc., of waves can be computed according to given boundary conditions, thus giving theoretical support to practical measurements on lines. Examples are given to illustrate the method of analysis.

    本文从电压和电流的基本方程出发,分析脉冲波在多导线传输系统的传播现象和多导线传输系统导线间的相互耦合作用。分析结果说明,在一轮换的双迴三相输电系统里,系统扰动将会产生四种不同速度的脉冲波,对这四种不同速度的脉冲波将有四个不同的特性阻抗。应用这些关系,将能解释线路上脉冲波传播的某些特殊现象,和按照给定的边际条件计算出波的畸变、反射和折射等等,从而对线路实测结果提供理论依据。文中举例说明这分析方法。 这脉冲波传播的理论分析被进一步推广应用到稳态交流运行情况,并推导出双迴输电线的等效电路。

    The selection of cut-off draw-grade is closely related to the resource reco-vory, profit and annual output of concentrate, thus it is concerned with the-composite, technical-economic effect. This paper is only to discuss emphatically one of them, that is the profit index.This paper suggests three knids of profit index to evaluate the economic effect, they are: 1) the profit per ton of the write off recoverable reserve; 2) the profit per ton of recovered orc; 3) profit-cost ratio. The relationship between marginal...

    The selection of cut-off draw-grade is closely related to the resource reco-vory, profit and annual output of concentrate, thus it is concerned with the-composite, technical-economic effect. This paper is only to discuss emphatically one of them, that is the profit index.This paper suggests three knids of profit index to evaluate the economic effect, they are: 1) the profit per ton of the write off recoverable reserve; 2) the profit per ton of recovered orc; 3) profit-cost ratio. The relationship between marginal benefit and mean profit is analyzed from the point of view of marginal benefit, so that the criteria of maximum value of the above mentioned profit indexes can be deduced respectively. To use these criteria and the two break-oven points, the draw process can be divided into severed section and each of them has diffeient benefit leved, which provide economical bisis for final dcsision of cut-off draw-grade.

    放矿截止品位的选择和资源回收率、盈利及每年精矿产量密切相关,从而影响到综合技术经济效果。本文仅侧重讨论其中的盈利指标。 文中推荐用三种盈利性指标去评价经济效果:1)每吨报销工业矿量盈利;2)每吨采出矿石盈利;3)利本率。从边际效益的角度分析了边际效益和平均盈利的关系,进而分别导出了上列诸盈利指标的极大值判据。应用这些判据和两个盈亏转折点,可把放矿过程划分成几个效益不同的区间,从而为最终选定截止品位提供经济依据。 使用覆岩下放矿的崩落采矿法时,矿石损失和贫化的高低,极大地影响矿床开采的经济效果。在矿床条件、崩落矿岩品位及流动特性、以及采矿方法结构参数和放矿方法一定的情况下,损失和贫化指标将主要取决于放矿截止品位的选择。 最优放矿截止品位的选定应该满足企业盈利性,资源回收率,以及最终产品的年生产能力等要求。考虑到盈利是企业活动效果的综合表现,反映了损失和贫化的影响,在决策中具有重要意义,本文拟主要就盈利性指标进行初步讨论。

    Multiobjective Decision-Making is now applied to urban water quality planning, for which there are environmental quality, water resources exploitation and economic benefits. A two-stage method is put forward which combines the improved ε-constraint-method and the multivariate regression, and is here used in water-quality planning of the intake canal system of Yong Ding River in Beijing. Alternatives are obtained and marginal relations between the various objectives are also established.

    本文研究用多目标决策进行城市水质规划.规划的三个目标是环境质量、水资源开发和经济效益.提出将改进ε-约束法与多元回归分析相结合的两阶段多目标决策方法,并将其用于北京市永定河引水渠系统的水质规划,得出了可供选择的方案以及目标之间的边际关系.

     
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