参变量积分
paramertric integration
Integration depending on a parameter
二变量积分不等式
integral inequality with two variables
二变量积分－微分方程
integral-differential equation with two variables
integral differential equation with two variables
含参变量积分
definite integral with parameter
integral depending on a parameter
Poincare-Cartan积分不变量
Poincare-Cartan integral invariant
Poincar啨＿Cartan积分不变量
Poincar_Cartan integral invariants
变量分离型积分因子
variate separated type integrating factor
生物量积累与分配的动态变化规律模型
The dynamic model for the accummulation and allocation of the biomasses
重积分的变量替换公式
formula of transformation of n-fold integrals vari
变分－积分方程
variation-integration equation
变分－积分微扰法
variational-integral perturbation method
积分变分原理
integral variational principle
integral yariational principle
参变量变分法
parametric variational principle