• 林龄因变量蓄积量生长模型决定系数引入地位指数密度指数再次参数化的生长模型显著提高模型拟合度。

    Single age variable stock volume growth model had low coefficient of determination, but it was improved a lot by introducing site index and stand density index in reparameterization.

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  • 应力指数疲劳强度减弱系数进行疲劳容器设计重要方法

    Stress index method and fatigue strength weakened coefficient method are important methods for designing fatigue vessel.

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  • 通过基于分析方法,对压力数据进行了分析,获得了基于子波系数频带能量冲击波强度指数

    Pressure data were analyzed by wavelet transform in wavelet domain. Frequency band energy spectrum and intensity index of ISW based on wavelet coefficient were obtained.

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  • 测试晶体吸收光谱指数增益系数衍射效率有效载流子浓度

    The absorption spectra, exponential gain coefficient, diffraction efficiency and effect carrier concentration of the crystal were measured.

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  • 利用小波变换系数信号奇异性指数之间关系调频信号中提取出调制信号的频率

    Frequency of modulated signals is extracted from frequency-modulated signals by using the relationship between the modulus of wavelet transform coefficient and the singular exponent.

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  • 通过改变换能器前后指数盖板半径减编系数,得出换能器纵向扭转两种振动模式同频共振条件。

    By changing the cross sectional radius decay coefficient of the exponential metal horns, the longitudinal and torsional vibrations in the transducer could resonate at the same resonance frequency.

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  • 研究了有关布朗单一参数指数平滑经济预测模型系数估计问题整理给出了比较完整证明

    This paper analysized the estimation problem on coefficient of Brown single parameter index smooth economic prediction model followed by giving a complete attestation.

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  • 结果利用线性回归方程计算出的含量通过校正系数相乘等于指数回归方程计算出的水碘含量。

    Results: Water iodine content calculated by linear regression equation, multiplied by coefficient of rectification, equals that calculated by index regression equation.

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  • 并将优化后指数平滑系数我国煤炭产量预测得以验证。

    The coefficient of exponential smoothing has been proved in the prediction of the coal output in our country.

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  • 本文采用煤层断裂破坏指数变形系数裂隙发育程度进行综合评价,预测

    An integrated evaluation of coal seam fracture development in terms of coal seam breaking index and deforming coefficient to predict high permeability area.

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  • 冠层分布面积指数叶片消光系数支配。

    The light distribution within the canopy is subject to the leaf area index and the extinction coefficient.

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  • 数据处理后,得出公式中的系数指数数值

    The coefficient and the exponential value in the formula were obtained after data processing.

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  • 分析煤矿重大危险源事故风险提出了煤矿危险性概率指数风险系数给定了参考值计算公式

    This paper analyzed the major hazards and accident risks. The risk index and power coefficient were presented and referenced value and formula were defined.

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  • 数值试验结果表明湿系数采用指数型定义法方案较为适合云南高原上中尺度数值模式。

    The experimental result show that the scheme which utilized index scheme in moistening coefficient is more suitable for mesoscale numerical simulation of Yunnan low latitude plateau.

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  • 文中提出了一种自动选择平滑系数指数平滑预测实例表明效果良好。

    Furthermroe, we provide an exponent smoothing method for automatically choosing the smooth coefficient. The effect is validated by the prediction examples.

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  • 过程中,驱油剂稠度系数沿渗流方向指数规律减小,而幂指数则以线型规律递增

    In chemical flooding, consistency coefficient of the oil displacement agent declines exponentially, the power law exponent increases linearly in the direction of percolation flow.

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  • 随着浓度上升稠度系数上升流变指数下降

    The consistency coefficient increased with rise in concentration, while the flow behavior index decreased.

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  • 模型冬小麦玉米轮作体系作物面积指数、作物系数根系生长分布进行了模拟。

    In the model, the leaf area index (LAI), crop coefficients, and root penetration and distribution were simulated for the winter wheat and summer corn double cropping system.

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  • 中国资源环境数据库为支撑,计算出19952000年湖北省各市县植被覆盖指数省级归一化系数

    Based on Chinese Resources and Environment Database, the vegetation coverage index for each county and its provincial normalized coefficient of 1995 and 2000 of Hubei province are calculated.

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  • 所有病灶指数扩散系数信号强度比率扩散加权减低

    In all lesions, the signal intensity ratio was generally lower on exponential diffusion coefficient images compared with that on diffusion-weighted images.

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  • 利用非线性动力分析方法,对阻尼系数阻尼指数进行参数分析,对阻尼器的布置位置进行了探讨。

    Damping coefficient and damping exponent are chosen as two main parameters, whose sensitivity is discussed through non-linear dynamic time-history method.

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  • 提出再固结体积压缩系数再固结压缩指数概念给出其确定方法

    The methods for determining coefficient of reconsolidation volume compressibility and reconsolidation index are given.

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  • 研究某些无机氧化铝压力指数温度敏感系数影响

    Effect of some inorganic lead salt and aluminium oxide on burning rate pressure exponent and temperature sensitive coefficient of polyurethane composite solid propellant have been investigated.

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  • 结果检出率平均等效声级增加而明显增加趋势,平均等效声级噪声作业人员损检出率呈密切的指数相关关系(相关系数r为0 812 45 )。

    Results The average equivalent sound level and the detectable rate of workers hearing loss were exponential positive correlation, the coefficient of correlation r was 0 812 45.

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  • 结果表明回弹弯曲角、管壁间隙材料硬化系数的增大增大,材料硬化指数的增大而减小。

    The results show that: the springback Angle of bent tube increases with the bending Angle, the gap between mandrel and tube, and the hardening coefficient, but decreases with the hardenability value.

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  • 最长最短染色体比值变化较大,为2.78~3.20; 平均臂比、着丝点指数、核型不对称系数相对长度变化范围较小

    The ratio of the longest chromosome to the shortest range in 2.78~3.20. And index, index of karyotypic asymmetry and relatived length changed indistinctly.

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  • 但是防晒指数等级到底是什么呢?SPF是防晒系数的意思。

    But what does the SPF rating really mean? SPF stands for Sun Protection Factor.

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  • 结果表明路面状况指数、路面行驶质量指数、路面强度系数路面抗滑摆预测数据较高的精度

    The results show that predicted data of pavement condition index, riding quality index, structure strength index and British pendulum number is much better precision.

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  • 质砂岩电阻率、地层因素、视胶结指数、电阻率增大系数、视饱和度指数均与温度有关

    Resistivity apparent formation factor, apparent cement exponent, resistivity index and apparent saturation exponent of shaly sands are related to temperature.

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  • 质砂岩电阻率、地层因素、视胶结指数、电阻率增大系数、视饱和度指数均与温度有关

    Resistivity apparent formation factor, apparent cement exponent, resistivity index and apparent saturation exponent of shaly sands are related to temperature.

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