林龄单因变量的蓄积量生长模型决定系数低,引入地位指数和密度指数再次参数化的生长模型可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.
应力指数法和疲劳强度减弱系数法是进行疲劳容器设计的重要方法。
Stress index method and fatigue strength weakened coefficient method are important methods for designing fatigue vessel.
测试晶体的吸收光谱、指数增益系数、衍射效率和有效载流子浓度。
The absorption spectra, exponential gain coefficient, diffraction efficiency and effect carrier concentration of the crystal were measured.
黏度系数和流变指数对温度和浓度对有较大的依赖性。
The consistency coefficient and flow behavior index are dependent on temperature and concentration.
利用小波变换系数的模值与信号奇异性指数之间的关系,从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.
通过改变换能器前后指数型盖板的半径减编系数,得出了换能器中纵向与扭转两种振动模式同频共振的条件。
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.
研究了有关布朗单一参数指数平滑经济预测模型的系数的估计问题,整理并给出了比较完整的证明。
This paper analysized the estimation problem on coefficient of Brown single parameter index smooth economic prediction model followed by giving a complete attestation.
结果利用线性回归方程计算出的水碘含量,通过与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.
并将优化后的指数平滑系数在我国煤炭产量的预测中得以验证。
The coefficient of exponential smoothing has been proved in the prediction of the coal output in our country.
本文采用煤层断裂破坏指数、变形系数对煤裂隙发育程度进行综合评价,来预测高渗区。
An integrated evaluation of coal seam fracture development in terms of coal seam breaking index and deforming coefficient to predict high permeability area.
针对水下航行器操纵运动方程,引入水动力系数敏感性指数的概念。
Aiming at the motion equation of underwater vehicle, a hydrodynamic coefficient sensitivity index is introduced.
光在冠层内的分布,受叶面积指数和叶片消光系数支配。
The light distribution within the canopy is subject to the leaf area index and the extinction coefficient.
经数据处理后,得出了公式中的系数和指数数值。
The coefficient and the exponential value in the formula were obtained after data processing.
分析了煤矿重大危险源与事故风险,提出了煤矿危险性概率指数和风险权系数,并给定了参考值和计算公式。
This paper analyzed the major hazards and accident risks. The risk index and power coefficient were presented and referenced value and formula were defined.
数值试验结果表明,增湿系数采用指数型定义法方案较为适合云南低纬高原上的中尺度数值模式。
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.
文中还提出了一种自动选择平滑系数的指数平滑法,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.
在驱油过程中,驱油剂的稠度系数沿渗流方向呈指数规律减小,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.
随着浓度的上升,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.
模型对冬小麦—夏玉米轮作体系作物叶面积指数、作物系数、根系生长与分布进行了模拟。
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.
所有病灶在指数扩散系数像上的信号强度比率要比扩散加权像减低。
In all lesions, the signal intensity ratio was generally lower on exponential diffusion coefficient images compared with that on diffusion-weighted images.
利用非线性动力时程分析方法,对阻尼系数和阻尼指数进行了参数分析,并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.
提出再固结体积压缩系数和再固结压缩指数的概念并给出其确定方法。
The methods for determining coefficient of reconsolidation volume compressibility and reconsolidation index are given.
研究了某些无机铅盐和氧化铝对燃速压力指数及温度敏感系数的影响。
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.
文中建立了岩石应力敏感指数与压缩系数之间的理论关系式。
A theoretical formula is proposed between the stress sensitivity index and the compressibility of rock.
结果听损检出率随平均等效声级的增加而呈明显的增加趋势,平均等效声级与噪声作业人员的听损检出率呈密切的指数正相关关系(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.
最长与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.
但是防晒指数等级到底指的是什么呢?SPF是防晒系数的意思。
But what does the SPF rating really mean? SPF stands for Sun Protection Factor.
结果表明:路面状况指数、路面行驶质量指数、路面强度系数和路面抗滑摆值的预测数据有较高的精度。
The results show that predicted data of pavement condition index, riding quality index, structure strength index and British pendulum number is much better precision.
泥质砂岩电阻率、视地层因素、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.
泥质砂岩电阻率、视地层因素、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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