1) convex linear combination
凸线性组合
1.
The paper introduces basic sets of solutions for nonhomogeneous linear ordinary differential equations and proves that the general solutions of such equations consist of all convex linear combinations of any basic set of solutions.
引进了非齐线性常微分方程的基本解组,证明了非齐线性常微分方程的通解由其基本解组的所有凸线性组合构成,由此给出了非齐线性常微分方程通解的又一表达形式。
2.
And we obtain a sufficient and necessary condition and operator coefficient estimates for f(z)∈Σ and show that the class Σ is closed under arithmetic means and convex linear combinations.
本文讨论了 Hilbert空间中具有正算子系数的亚纯单叶算子值函数集 Σ[α,β],得到了 f( z)∈Σ[α,β]的充要条件及算子系数估计 ,并表明在算术平均及凸线性组合下Σ[α,β]是闭的 。
2) linear convex combination
线性凸组合
1.
In this paper, we give a class of operator valued analytic function with locally uniform convergence of linear convex combination and obtain a geometric property with reference to this class of operator valued analytic function.
给出了一类具有线性凸组合内闭一致收敛的算子值解析函数,并得到这类算子解析函数的一个几何特
3) Linear combination
线性组合
1.
Drazin inverse of linear combination of two matrices and its application;
Drazin逆的线性组合及其应用
2.
Weighted approximation by a class of linear combinations of Bernstein type operators;
一类Bernstein型算子线性组合加Jacobi权的逼近
3.
On the linear combination of Szasz-type operators;
关于Szasz型算子的线性组合
4) linear combinations
线性组合
1.
On the distribution of linear combinations of normally distributed random variables;
关于正态随机变量的线性组合分布
2.
Pointwise estimates for linear combinations of Szász operators;
Szász算子线性组合的逼近
3.
Using the pointwise modulus ωφλ2r(f, t), we discuss the approximation theorem for the r order linear combinations of Bernstein-Durrmerer operators.
本文利用点态光滑模ω(?)λ2r(f,t)研究了Bernstein算子的r阶线性组合的点态逼近。
5) combination
[英][,kɔmbɪ'neɪʃn] [美]['kɑmbə'neʃən]
线性组合
1.
Uniform approximation for combinations of Gauss-Weierstrass operators;
Gauss-Weierstrass算子线性组合的一致逼近
2.
We give a characterization of a class of combination of bivariable positive linear operators in uniform approximation.
给出了一类多元线性正算子线性组合在一致逼近意义下的特征刻划。
3.
In this paper, we give the pointwise approximation theorems for the combinations of Szdsz-Mirakjan operators and consider the relation between the derivatives of these operators with higher orders and the smoothness of the functions approximated.
本文给出了Szasz-Mirakjan算子线性组合的点态逼近定理。
6) linear protruding combined prediction
线性凸联合预测
补充资料:组合凹模与凸模
当制件形状复杂、尺寸较大或很小、精度要求高时,一般采用组合式结构
图8-5 P174
a)为组合凸模的例子 b)为组合凹模的例子
设计时:螺孔的位置应靠近刃口,销孔的位置应远离刃口
凹模的例子(书上没有讲清楚),看补充讲义P1
补充:
1) 平面式(图35) 为什么分3块?使用和加工方便,可分块加工,分块拆换
用螺钉及销定固定到固定板或底座上
一般用于大型模具或多孔模具
2) 凸边式(图36) 把凹模的各拼块嵌入两边或四边的凸边固定块内,凸边的高度不小于拼块高度H的一半,凸边的宽度大于两倍销钉直径d
适用于冲制薄料和小制件
将内加工改为外加工,下面两种分块法更好?
3) 套筒式(图37) 把凹模或凸模按不同直径分割成几个同心圆套筒,分别加工后相互套合组成。
4) 种植式(图37)将凹模中难于加工或悬臂很长受力危险的部分分割出来,做成凸模形式的镶块,嵌入凹模里固定牢,并在凹模下面增加淬硬垫板。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条