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   准指数 的翻译结果: 查询用时:0.439秒
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准指数
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  pre-exponential
     EXPONENTIAL AND PRE-EXPONENTIAL ASYMPTOTICAL STABILITY OF SOLUTION FOR A CLASS OF NONLINEAR DELAY SYSTEM
     一类非线性滞后型系统解的指数渐近稳定与准指数渐近稳定性
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  “准指数”译为未确定词的双语例句
     According to the mechanism and condition of grey GM(1,1) (grey-model) model building ,it is the important condition of building mould that data has accurate smoothness,often making data have accurate index law through progressive generation.
     根据灰色GM(1,1)模型(grey-model)的建模机理和条件,数据具有准光滑性是建模的重要条件,经常通过累加生成使数据具有准指数规律。
短句来源
     But for data,which have accurate index law,further progressive generation may destroy its inde law.
     但对数据本身具有准指数规律,进一步累加生成可能会破坏其指数规律。
短句来源
     Aim at this kind of condition in establishing grey model,it should allow the judgement of index law of data at first.
     为此在建立灰色模型中,应先对数据进行准指数规律的判断;
短句来源
     If data have accurate index law, direct data grey model should build to do with them.
     如果数据本身具有准指数规律,应该按照直接数据灰色模型的建模方法。
短句来源
     So it is helpful to get rid of blindness in mould building,and using direct data grey GM(1,1) for the data sequence that has accurate index law can get higher precision,which has verified it抯 validity.
     这样有利于克服建模中的盲目性,并且对具有准指数规律的数据序列用直接数据灰色GM(1,1)模型的建模方法能够获得较高的精度,验证了它的有效性。
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  相似匹配句对
     ON THE INDEX OF ALMOST DIAGONAL MATRIX
     对角阵的指数
短句来源
     Index number for atmospheric pollution
     大气污染指数
短句来源
     Service Quality Index
     服务质量指数
     THE RELATIONSHIP BETWEEN DOUBLE EXPONENTIAL FAMILY AND EXTENDED QUASI-LIKELIHOOD FUNCTION
     重指数族与推广的似然函数间的关系
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     A Preliminary Inquiry into Quasi-judicial Admission
     自认刍议
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  pre-exponential
The pre-exponential factor is 4.50 × 105 h-1 and 1.08 × 104 h-1, respectively.
      
According to the Arrehenius equation, the apparent activation energy of 26.5 kJ/mol and pre-exponential factor of 3 330 min-1 were obtained at the temperature range of 288-308 K.
      
For the photoreactions with reactants in which dyes are electron acceptors, the values of the intrinsic barrier of electron transfer and the pre-exponential factor of the reaction rate constant were determined.
      
The empirical values of the pre-exponential factors in the formulas for determining the HN3 desorption constants were estimated.
      
Kinetic parameters (reaction order, activation energy, pre-exponential factor) calculated by the Horowitz-Metzger, Coats-Redfern, and Lipskis methods are compared.
      
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Discussing the standard of ship manoeuvring, puts three standard indexes of ship manoeuvring for optimization of ship manoeuvrability. Based upon the numerical model of the nonlinear ship manoeuvring motion, the relationship among ship principal particulars, rudder parameter and standard index is presented. And the numerical model for ship manoeuvrability optimization is also proposed.

讨论了船舶操纵性衡准,提出了用于操纵性能优化的三个操纵性衡准指数,利用非线性船舶操纵运动数学模型建立了船舶主尺度与衡准指数之间的关系,给出了船舶操纵性能优化的数学模型。

According to the mechanism and condition of grey GM(1,1) (grey-model) model building ,it is the important condition of building mould that data has accurate smoothness,often making data have accurate index law through progressive generation.But for data,which have accurate index law,further progressive generation may destroy its inde law.Aim at this kind of condition in establishing grey model,it should allow the judgement of index law of data at first.If data have accurate index law, direct data grey model...

According to the mechanism and condition of grey GM(1,1) (grey-model) model building ,it is the important condition of building mould that data has accurate smoothness,often making data have accurate index law through progressive generation.But for data,which have accurate index law,further progressive generation may destroy its inde law.Aim at this kind of condition in establishing grey model,it should allow the judgement of index law of data at first.If data have accurate index law, direct data grey model should build to do with them.So it is helpful to get rid of blindness in mould building,and using direct data grey GM(1,1) for the data sequence that has accurate index law can get higher precision,which has verified it抯 validity.

根据灰色GM(1,1)模型(grey-model)的建模机理和条件,数据具有准光滑性是建模的重要条件,经常通过累加生成使数据具有准指数规律。但对数据本身具有准指数规律,进一步累加生成可能会破坏其指数规律。为此在建立灰色模型中,应先对数据进行准指数规律的判断;如果数据本身具有准指数规律,应该按照直接数据灰色模型的建模方法。这样有利于克服建模中的盲目性,并且对具有准指数规律的数据序列用直接数据灰色GM(1,1)模型的建模方法能够获得较高的精度,验证了它的有效性。

Due to the characteristics of randomicity and gray information in forecasting runoff,the traditional models were quite difficult to solve those complex and non-structural problems.Based on the runoff forecasting of some gauge stations in Tarim River Basin participated,the validity and some problems of GM(1,1) and BP algorithm existed in runoff forecasting were discussed.In the paper,the gray absolute,relative and integrated correlation degree between characteristic series and factors' series were firstly analyzed...

Due to the characteristics of randomicity and gray information in forecasting runoff,the traditional models were quite difficult to solve those complex and non-structural problems.Based on the runoff forecasting of some gauge stations in Tarim River Basin participated,the validity and some problems of GM(1,1) and BP algorithm existed in runoff forecasting were discussed.In the paper,the gray absolute,relative and integrated correlation degree between characteristic series and factors' series were firstly analyzed using gray correlation theory.And then,a GM(1,1) was established.The limitation of simulating a stochastic and oscillating sequence through GM(1,1) under the condition of the satisfaction of quasi-smoothness of original sequence and the satisfaction of quasi-exponential law of 1-Accumulating Generation Operator was talked over.In the end,an artificial neural network model was set up.The weight matrices and biases of the network were trained using BP algorithm.The historical evolvement of runoff was simulated and the runoff of reserved years were predicted and checked up.

因径流量预测中伴随着随机性、灰信息性的特点,传统的数学模型难以解决复杂的非结构化问题。在参与塔河流域多个水文控制站点径流量预测的基础上,探讨了GM(1,1)与BP算法在径流量预测中的有效性及存在的一些问题。首先用灰色关联理论对相关序列的灰色绝对、相对、综合关联度进行了分析;然后建立了GM(1,1)模型,讨论了在原始序列准光滑条件满足、1-AGO准指数规律满足条件下GM(1,1)模型模拟随机振荡序列的局限;最后建立了神经网络模型,应用BP算法训练网络权矩阵和偏置,对径流量的历史演变进行了仿真模拟,对预留年份的径流量作了预测检验。

 
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