Based on the forging principle of divided-flow and with the method of secondary divided-flow, the two-stage forming technology of cylindricalstraight inner gear was put forward.
为改善直齿内齿轮零件采用常规闭式镦挤成形时载荷大、型腔充满困难、模具磨损严重等情况,本文在分流锻造法的基础上,采用二次分流的方法,提出了直齿内齿轮的两段成形的精密锻造成形新工艺,即缩挤和镦挤相结合的成形工艺。
The magnetic particles prepared through coprecipitation suspend stably in the fluid of polydimethylsiloxane after twice dispersing,and so the polydimethylsiloxane based ferrofluid is prepared.
共沉淀法制备的磁性颗粒经二次分散后稳定悬浮于硅油中 ,得到了硅油基磁流体 。
Using the method of quadratic differential,we obtain that the Affine transformation in angle region is not an extremal mapping with its boundary values,and give explicitly an unique extremal Teichmller mapping with the same boundary values as the Affine transformation.
采用二次微分的方法，得到了角形区域Ω１的Ａｆｆｉｎｅ变换关于其边界值不是极值映照。
Extraction of impacted mandibular third molars with two times dividing crown;
二次分冠“抽屉”式拔除水平阻生齿临床效果评价
Qualitative analysis of a class of quadratic differential system;
一类二次微分系统的定性分析(英文)
Integral Criterion of One Kind of Second-Orden Ouaclratic Equation And Reduction of Its Integrals to Common Denominaton;
一类二阶二次微分方程的可积判据及其通积分
Solutions of Three New Second-order Quadratic Differential Equations and Their General Solution Formula;
新三类二阶二次微分方程的解法及其通解公式
General Solutions to Some Kinds of Secord-Order Quadratic Equations;
几类二阶二次微分方程的解法及其通解公式
Solving a Differential Equation of One Orderby Polar Transformation;
一阶二次微分方程在极坐标变换下的求解定理
n emission microanalyzer
二次离子发射显微分析仪
The Almost Periodic Solution to Quadratic Differential Equation with Almost Periodic Coeffecients;
二次概周期系数微分方程的概周期解
Oscillation Theorems for Second Order Strong Sublinear Differential Equations;
二阶强次线性微分方程的振动性定理
A Solution to Three Types Continuance Linear Even Differential Equation of Two Times Complete Cubic;
二次方三项式线性齐次微分方程的解法
The solution of the interlace series type linear even differential equation of contain negative twice power function and arrangement number;
负二次幂交错级数型线性齐次微分方程
Subnormal Solutions of Second Order Homogeneous Linear Differential Equations with Periodic Coefficients
周期系数二阶齐次线性微分方程的次正规解
Solution of Two-order Nonlinear Ordinary Differential Equations by First Integral;
利用首次积分求解几类二阶非线性常微分方程
fractional differentiation
分数微分(法)，分数次微分
The Method of Quadratic Constant Variation for Solving Several Kinds of Nonlinear Differential Equations;
用二次常数变易法解几类非线性微分方程
A Method on the General Solution to the Second-order Nonlinear Homogeneous Differential Equation;
求二阶非齐次线性微分方程通解的一种方法
The Algorithm Model of A Special Solution to the Second-order Nonhomogeneous Linear Constant Coefficients Differential Equation;
二阶非齐次线性常微分方程特解的算法模型
Special Integral Form of Order 2 Constant Coefficient Innomogeneous Linear Differential Equation;
二阶常系数非齐次线性微分方程特解形式
Study on Non-oscillatory Solution of the Second-order Linear Homogeneous Ordinary Differential Equations;
关于二阶线性齐次微分方程解的非振动性研究
