分段常数变元
piecewise constant arguments
部分分数分解
decomposition into partial fractions
resolution into partial fractions
参变量变分法
parametric variational principle
参变量变分原理
parametric variational principle
parametrical variational principle
parametric variational principles
parametric variation principle
多类变量变分原理
pro-variational principal
分段常变元
piecewise constant argument
分段常数不连续
subsection constant non-continuum
分段常数非线性
piecewise constant nonlinearity
具分段常数微分方程
differential equation with piecewise constant argu
序列链段数量分布
sequence fragment number distribution
逐段常变量微分方程
differential equations with piecewise constant