针对目前国内利用二元二次肥料效应函数确定最佳经济施肥量的数学方法存在的问题。
The function of binary quadric fertilizer effect has been extensively used in China to determine the optimum economy fertilizing quantity.
引入协同效应函数,不仅提高了回归方程的可信度,而且能反映协同效应的形成规律。
Synergetic effect function is introduced to improve the creditability of regression equations and to express the law in synergetic effect formation.
损伤效应函数的具体形式可由细观力学解答确定,从而使连续损伤力学与细观损伤力学有机结合在一起。
The detailed expressions of the damage effect functions are investigated by micromechanics, which enables us to relate the continuum damage mechanics with the microscopic damage mechanics.
本文建立了基于效应函数的冷轧机板形控制模型,并根据应用场合的不同,着重探讨了其实现具体应用的可能方式。
The corresponding shape control model based on the evaluation function is given, and the possible realization ways of the model are discussed for application in different situation.
采用“3414”肥料效应试验方案,研究了安徽省东至县油菜高产栽培的氮、磷、钾肥肥料效应,并建立了肥料效应函数模型。
Using 3414 fertilizer effect experiment, the effect of nitrogenous(N), phosphate(P), potash(K) fertilizer on rape yield in Dongzhi County was researched.
为了避免别名效应,您需要调用内置的copy函数来复制列表,然后改为对副本进行赋值。
To avoid this aliasing effect, you need to call the built-in copy function to duplicate the list, and then assign the copy instead.
这个模型的核心是延伸型指数函数的松弛效应,就像放射性物质的衰变曲线一样。
The core of this model is a function called a stretched exponential relaxation, which is similar to the decay curve of a radioactive material.
用卫星的点扩展函数描述卫星形状效应,能非常简便地计算出被卫星反射后的脉冲强度分布。
Description of satellite form effect with point spread function of satellite can calculate satellite reflected pulse intensity distribution in a simplified method.
在经典弹-塑性理论的屈服函数中引入应变梯度及考虑应变率效应的函数。
The second shear strain gradient and the function reflecting the effect of strain rate are introduced into the yield function of classical elastoplastic theory.
在分析飞行安全风险的基础上,通过定义事故或危险事件损失效应,选取合适的效用函数进行飞行安全风险的度量。
Based on analysis to the flight safety risk, we choose a proper utility function to measure the flight safety risk by defining the loss effect of accidents or dangerous events.
本文研究了一般的随机效应多元线性模型中线性可估函数的最优线性无偏估计。
In this paper we investigated optimal linear unbiased estimation of the linear estimable function in general multivariate random effect linear model.
基于标量衍射理论,考虑衍射效应的条件下,从理论上推导了编码孔径点扩散函数的公式,并对环形编码孔径进行了详细的讨论。
Considering diffraction effect based on scalar theory, we deduced a formula for point spread function of the coded aperture and discussed the ring coded aperture in detail.
文化禀赋的国际贸易效应分析,是将文化禀赋作为一种内生变量,引入国际贸易函数。
The analysis of culture endowment effect in international trade is to introduce culture endowment, as an inherent variable, to the function of international trade.
构造考虑齿槽效应的气隙相对磁导函数,计算出气隙磁通密度,进而用麦克斯韦应力张量法计算出电机的磁阻转矩。
The effect of stator slotting being taken into consideration, the air gap relative permeance functions are derived and the flux density in air gap are computed.
本文概述了核子结构的核效应,并着重介绍了两套束缚核子的部分子分布函数。
In this paper, the nuclear effects of the bound nucleon structure are reviewed, two sets of nuclear parton distribution functions are introduced.
本文以有限元方法为基础,导出了结构荷载效应特征函数算式。
Based on the finite element method, the characteristic function of structural load effects is derived in this paper.
通过建立模糊子集的隶属函数,来分析不同施肥方式的效应之间的数量差异。
The quantitative variation in the effects of different methods of fertilization is analysed by forming a membership function of fuzzy subsets.
EMC效应的发现反映了自由核子与束缚核子的结构函数明显不同,核环境可以影响核子的内部结构。
EMC effects reflect that free nucleon structure functions are different from bound nucleon. Nuclear environment affect inner structure of nucleon.
这种单位流通业物流成本函数关系很好解释了物流配送的一个显著特点—集聚效应。
The function relation about unit cost of circulating logistics has perfectly explained one salience of physical distribution—gathering effects.
结果表明,窝效应只能反映部分永久环境效应,估计协方差函数时需配合全阶多项式;
The results showed that litter effect only reflected part of the permanent environmental effects and full order fit was necessary to estimate the covariance functions.
计算基本SV模型和杠杆效应SV模型的联合特征函数,借助经验特征函数方法估计这两个SV模型。
The characteristic functions of basic SV model and SV model with leverage effect are derived, an estimation (method) of SV models via empirical characteristic function is discussed in this paper.
为验证这一问题,笔者拓展了C - D生产函数模型,评估了FDI的技术外溢效应。
To validate this problem, the author develops a C-D production function model and makes an evaluation of the technological spillover effect of FDI.
对指数族非线性随机效应模型,本文首次利用Q函数进行统计诊断。主要创新性研究成果如下。
Q function have been used to study the statistical diagnostics for the exponential family nonlinear models with random effects.
首先,给出了包含大气湍流内,外尺度效应的折射率功率谱密度函数。
Firstly, the power spectral density function of refractive index is given including the effects of inner and outer scale of the turbulence.
在近壁区范围内,采用壁函数技术解决壁面效应问题。
In the areas close to the boundary, the technique of wall function is adopted to solve the effect of the wall surface.
结合样条函数和里兹法提出薄壁箱形梁剪力滞效应计算的样条里兹法。
The spline Ritz method was proposed and used to analyse the shear lag effect of box girders.
但在变程内具有显著的空间结构性特点,其各个方向上变异函数的理论模型均为具有块金效应的高斯模型。
But all directional variograms have good spatial structures in their range, and all their theoretical models are the Gauss models with nugget effect.
利用福克-普朗克方程的方法,讨论了RL回路中热涨落产生的电流效应,分析了噪声参数对电流定态几率分布函数的影响。
Using method of Fokker-Planck equation, effects of electrical current in RL circuit are discussed, and the effects of noise parameters on stationary probability distribution are analysed .
提出了依据宽带随机谱功率密度函数求解等效应力幅的半解析公式。
The semi-analytical solution for evaluating ESR from spectral density function of wide-band random loading is presented.
提出了依据宽带随机谱功率密度函数求解等效应力幅的半解析公式。
The semi-analytical solution for evaluating ESR from spectral density function of wide-band random loading is presented.
应用推荐