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 mean square deviation 均方差(69)
 均方差
 The nonuniform coefficient is defined as the ratio of mean square deviation of mean interval discharges in a year to mean annual discharge of the year and it is a standard statistics. 该方法以年内各时段平均流量的均方差与年平均流量的比值作为径流年内分配的不均匀系数 ,用标准的统计量定量描述径流年内分配的不均匀性 ; 短句来源 Based on the uncertainty and inaccuracy characteristics,runoff series could be divided into different states via mean square deviation method of data series. 基于径流过程不确定性、不精确性的特点,利用资料系列的均方差方法把径流序列分为不同的状态。 短句来源
 “mean square deviation”译为未确定词的双语例句
 Compressive strength(R),mean square deviation(σ) ,variance coefficient (Cv ) and rate of firm strength (P)of concrete are four important indeses,which defermine the grand of a concrete structure. 在水电站建设中，混凝土坝（拱坝或重力坝）工期短、技术要求高。 混凝土抗压强度（R）是混凝土坝质量的一项重要指标，混凝土设计抗压强度定了之后，由混凝土强度组数（按规范取）可推算出混凝土约方差（σ）、混凝土离差系数（Cv），最后算出混凝土强度保证率（P）是否满足设计要求。 短句来源

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 mean square deviation
 As a measure for the goodness of fit we use the mean square deviation; for this we take a wide sense stationary stochastic process as basis. Parameters that satisfy the closure equations exhibit better root mean square deviation than those that do not satisfy the closure equations in most of the cases. In this study, a root mean square deviation (RMSD) in the impedance signatures of the PZT patches is used as a damage indicator. Asymptotic distribution of the mean square deviation of the Gasser-Müller estimate of the regression curve is investigated. Limit Distribution of the Mean Square deviation of the Gasser-Müller Nonparametric Estimate of the Regression Function 更多
 This paper gives an integrated prediction model of point in seepage field and its reliability analysis,which is established on the analysis of frequency-wave,relativity and probability.Two methods for determing the significance of the mean deviation in two samples and the significance of the mean square deviation of several samples,are applied to give a scientific judgement and objective index for reliability and sensitivity of the observation equipment, reliability and precision of the observation data,geo-deformation... This paper gives an integrated prediction model of point in seepage field and its reliability analysis,which is established on the analysis of frequency-wave,relativity and probability.Two methods for determing the significance of the mean deviation in two samples and the significance of the mean square deviation of several samples,are applied to give a scientific judgement and objective index for reliability and sensitivity of the observation equipment, reliability and precision of the observation data,geo-deformation due to seepage force in the seepage region.The prediction model given in this paper is a dynamic model which not only predicts mean and range of seepage parameters under some conditions,but also gives reliability and significance of the prediction value and the deviation of the prediction model 建立在频波分析、相关分析和概率统计分析基础上的点预报模型，应用两个样本均值差显著度和多个样本均方差显著度的测定方法，对原观设备的可靠度、灵敏性；对观测资料的正确性、分散性和可靠度；对渗流场的突变和缓变等均作出了判断。动态的点预报模型不仅给出点预报值的期望值和可能变化的范围，还给出了预报值的可靠度和显著度，并估算了预报模型对样本总体模型的偏差。 Compressive strength(R),mean square deviation(σ) ,variance coefficient (Cv ) and rate of firm strength (P)of concrete are four important indeses,which defermine the grand of a concrete structure. The paper compares measured compressive strengths of concrete located at deep slots and bottom of dam of Dongfeng Station,then manages to discover the way of constructing high quality and economic concrete structu res. 在水电站建设中，混凝土坝（拱坝或重力坝）工期短、技术要求高。混凝土抗压强度（Ｒ）是混凝土坝质量的一项重要指标，混凝土设计抗压强度定了之后，由混凝土强度组数（按规范取）可推算出混凝土约方差（σ）、混凝土离差系数（Ｃｖ），最后算出混凝土强度保证率（Ｐ）是否满足设计要求。混凝土建筑物评定为优或合格，由混凝土的上述４项指标来决定。本文对东风水电站大坝深槽和局部混凝土的实测抗压强度进行对比，从理论上找出使混凝土建筑物既是优质工程、又能节约工程投资（相对的）的途径。 In this paper a nonuniform coefficient for quantifying the nonuniformity in annual distribution of stream flows is proposed.The nonuniform coefficient is defined as the ratio of mean square deviation of mean interval discharges in a year to mean annual discharge of the year and it is a standard statistics.Variations of the coefficients are analyzed through some measured stream flow data.The possibility of the nonuniform coefficients to be recognized as an index in water resources decision ... In this paper a nonuniform coefficient for quantifying the nonuniformity in annual distribution of stream flows is proposed.The nonuniform coefficient is defined as the ratio of mean square deviation of mean interval discharges in a year to mean annual discharge of the year and it is a standard statistics.Variations of the coefficients are analyzed through some measured stream flow data.The possibility of the nonuniform coefficients to be recognized as an index in water resources decision making is described. 提出了一种河川径流年内分配不均匀性的定量化方法。该方法以年内各时段平均流量的均方差与年平均流量的比值作为径流年内分配的不均匀系数 ,用标准的统计量定量描述径流年内分配的不均匀性 ;通过实例分析了不均匀系数的变化规律 ;探讨了将不均匀系数作为水资源决策指标的可能性 << 更多相关文摘
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