周期矩阵

Block period tridiagonal matrix

分块周期三对角矩阵

实对称三对角线矩阵:Real symmetric tridiagonal matrix | 分块周期三对角矩阵:Block period tridiagonal matrix | 交叉环:Crossed cycle

period of circulating (repeating) decimal

小数的循环节

周期矩阵 period matrix | 周期格子;周期网 period meshes | 小数的循环节 period of circulating (repeating) decimal

essentially positive matrix

本质正矩阵

殆周期序列 essentially periodic sequence | 本质正矩阵 essentially positive matrix | 本质的自伴变换 essentially self-adjoint transformation

Product life cycle

产品生命周期

产 品生命周期(Product Life Cycle)也可称为S曲线(S-Curve),见文[BCG矩阵的时间因子与产品生命周期曲线]讨论. S曲线横轴为时间,纵轴为产品普及率或销售量,根 据S曲线划分,每种产品生命周期包括起步期(Introduction Stage)、成长期(Growth Stage)、成熟期(Maturity Stage)与衰退期(Decline Stage)等.

period matrix

周期矩阵

period 周期 | period matrix 周期矩阵 | period of a function 函数的周期

period of a function

函数的周期

period matrix 周期矩阵 | period of a function 函数的周期 | period of oscillation 振荡的周期

Higher dimensional positive definite kernel

高维正定周期核

亚正定矩阵:metapositive definite matrix | 高维正定周期核:Higher dimensional positive definite kernel | 非正定性:Non-positive matrix

almost triangular matrix

准三角形矩阵

铝硅合金 alminal | 准周期函数 almost periodic function | 准三角形矩阵 almost triangular matrix

periodic tridiagonal matrix

周期三对角矩阵

建模方法:model method | 周期三对角矩阵:periodic tridiagonal matrix | 交叉三对角矩阵:crossed tridiagonal matrix

crossed tridiagonal matrix

交叉三对角矩阵

周期三对角矩阵:periodic tridiagonal matrix | 交叉三对角矩阵:crossed tridiagonal matrix | 三对角方程组:tridiagonal systems

colonial rule：殖民统治

colonial protectorate;殖民保护地;殖民被保护国;; | colonial rule;殖民统治;; | Colonial Secretary;辅政司;;

matrimonial agency：婚姻介绍所

21 deep love 深沉的爱情 | 22 matrimonial agency 婚姻介绍所 | 23 lover,sweetheart 情人