Hyperbolic curve equation(X_t = b-a/t) was used to fit the accumulated nutrient dissolving percentage and the slow-release index(SRI) calculated from b and a values of the equation was used to evaluate the nut.
在实验室条件下,采用简化的工艺制备了对氮、磷、钾三元素均有部分缓释作用的复混肥(化学缓释肥),用特定淋洗装置测定肥料各养分随时间的溶出率,通过双曲线方程Xt=b-a/t对其养分累计溶出率与时间的关系进行拟合,以方程常数b和a计算出的缓释指数(SR I)来定量评价肥料缓释特性,同时进行盆栽试验,探讨了缓释指数与复混肥中相应缓释添加剂百分含量(X)之间、各复混肥处理的油菜产量与复混肥中缓释添加剂总含量(X')之间的关系。
On a class of nonlinear hyperbolic equations in unbounded domain;
无界域上的一类非线性双曲方程的局部可解性
Energy decay of global solution of initial boundary value problem for a class of nonlinear hyperbolic equation;
一类非线性双曲方程初边值问题整体解的衰减
We discuss the following nonlinear hyperbolic equationu tt -a 1△u-a 2∑ni=1x i(|u x i | m-1 u x i )-a 3△u t=0with the initial boundary value problem, we give the condition of existence and nonexistence for the global solution and the energy decay.
讨论了一类非线性双曲方程utt-a1△u-a2 ∑ni=1 xi(｜uxi｜m - 1uxi) -a3 △ut =0的初边值问题整体弱解的存在性与不存在性和指数衰减 。
Remarks on the initial boundary value problem of semi-linear hyperbolic equations;
关于半线性双曲方程初边值问题的注记
Two threshold results for global existence and nonexistence of solutions for semi-linear hyperbolic equations and parabolic equations;
半线性双曲方程与抛物方程解整体存在与不存在的两个门槛结果
A Method on Applying of the Known Asymptote Equation to Solve the Hyperbola Equation;
已知渐近线方程求双曲线方程的一种方法技巧
Arps hyperbolic decline equation
阿普斯双曲线递减方程
Finite Volume Method for Quasilinear Hyperbolic Equation
非线性拟双曲方程的有限体积元方法
The Initial Value Problem for a Class of Nonlinear Hyperbolic Systems of Conservation Laws;
非线性双曲守恒律方程组的初值问题
Hyperbolic Function Series Method for Solving Nonlinear Wave Equations;
非线性波动方程的双曲函数级数解法
Initial Boundary Value Problems for a Class of Nonlinear Hyperbolic Equation;
一类非线性双曲型方程的初边值问题
Exact Observability for Second Order Quasilinear Hyperbolic Equations
二阶拟线性双曲型方程的精确能观性
Oscillation of Nonlinear Impulsive Hyperbolic Equations of Neutral Type with Several Delays
非线性脉冲中立型双曲方程的振动性
A Class of Coupled Nonlinear System of Hyperbolic Equations
一类非线性耦合双曲型方程组的研究
The Solving Theorem of Second Order Linear Hyperbolic Equation;
二阶线性双曲型方程利用线性变换求解定理
Error Estimates of The Semi-discrete Finite ElementMethod For A Class of Linear Hyperbolic Equations;
线性双曲型方程半离散有限元方法的误差估计
The Global Superconvergence of Finite Element Method for a Kind of Nonlinear Hypobolic Equation
非线性拟双曲方程有限元方法的整体超收敛
H~1-Galerkin Mixed Finite Element Method for Nonlinear Quast-hyperbolic Equation
非线性拟双曲方程的H~1-Galerkin混合有限元方法
ON CONSTRUCTION OF THE GLOBAL SOLUTION BOR QUAIC-LINEAR HYPERBALIC SYSTEMO OF CONSERVATION LAWO
拟线性双曲型守恒律方程组的整体的构造解
Inverse Problem of the Boundary Value Problem in a One-Dimensional Linear Hyperbolic Equation
一维线性双曲型方程边界值反问题(英文)
Exact Controllability for Nonautonomous Quailinear Hyperbolic Systems;
非自治拟线性双曲型方程组的精确能控性
The Existence of Solutions of Initial-boundary Problems for a Semilinear Hyperbolic Systems;
一类半线性双曲方程组初边值问题解的存在性
Rapid Exact Controllability of the Semilinear Hyperbolic Equations;
半线性双曲方程的快速精确能控性问题