基本解释：R 模范畴
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A module T is called weak injective in case for any R-module N, any non-zero submodule M of N, and any 0 ≠ a ∈ HomR(M, N) such that for any β ∈ HomR(M, T) with Kera Kerβ, there exists γ ∈ HomR(M,T) satisfying β = γa.在本文的第一部分中，我们对内射模的定义进行了推广，定义了弱内射模：设T，N为R-模，对于N的任意非零子模M(?)N，若存在0≠α∈Hom_R(M，N)使得对于任意满足Kerα(?)Kerβ的β∈Hom_R(M，T)，都存在γ∈Hom_R(N，T)使得β=γα成立，则称T为N-弱内射R-模，且称α为T与M的相伴同态。
Research on translation method of Special Superclass/Subclass Structure in E-R Model;E-R模型特殊超类/子类结构转换方法研究
This paper also analyzes the E-R model for aeroengine test engineering database, the structure of aeroengine test engineering database, the interface of the data processing program with the aeroengine test engineering database,and the development of client module.同时还分析了某型发动机试车工程数据库的E-R模型、客户/服务器体系结构、数据处理程序和工程数据库的接口、客户端功能模块的开发。
In order to improve the productivity of the module of data input,the layered E-R model based input technology is presented.传统E -R模型是对现实世界的一种有力的抽象 ,但是E-R模型中的实体关系十分复杂 ,尤其是在实体数目大、相互联系复杂的情形。
An Equivalence between the Categoriesof G/H,R-graded Module and R~((H))-ModoleG/H-分次R-模范畴与R~(H)-模范畴的等价性
Evaluation model of R&D project based on modularization management;基于模块化管理的R&D项目评价模型
Distinctions between A R&D Project Selection Model and A R&D Project Termination Model;R&D项目选择模型和终止模型的比较
A STUDY ON THE MODELLING OF THE MOVEMENT OF BIOMECHANICAL HUMANUPPER LIMB WITH R～2-R～2-R FIVE-DEGREE-OF-FREEDOM;R～2-R～2-R5自由度人体上肢仿生机构的运动建模及研究
Valuation and Decision of R&D Projects under Uncertainty: Real R&D Option Model and Its Numerical Analysis;不确定下的R&D项目评价与决策：R&D实物期权模型及其数值分析
C-R-A Model: A Tripartite Account of Verbal Communication;C-R-A模式：言语交际的三维阐释
Nonlinear Evolution of R-T Instability and SPH Simulation;R-T不稳定性非线性发展和SPH模拟
Research on Correlative Technology of PP-R Pipes Injection Mold Design;PP-R管件注塑模具设计相关技术研究
Research and Implementation on R-Tree Cost Mode and Query Optimization;R-Tree代价模型与查询优化研究与实现
Research on Quantitative Model Construction for Strategic R&D Subsidy Policy Effects;战略R&D补贴政策效应数量模型研究
Congruences Involving F_(kn+r) mod F_n~2;Fibonacci序列{F_(kn+r)}模F_n~2的同余式
A Model Analysis on the Lower R&D/GDP in China;我国R&D/GDP偏低的模型解析
Study on the Externality of Enterprise s R&D Based on Cournot-Model;基于古诺模型的企业R&D外部性分析
Discussion on the Feasibility of Fashion Marketing Based on R&V Mode;基于R&V模式的服装营销可行性探讨
‘R&D Tree’ Modeling For R&D Budget Allocation of Enterprises;企业R&D预算分配的“研发树”模型
The Optimal Allocation of R&D Capital in Innovation and Imitation;创新与模仿中R&D资本的最优分配
Cooperation with Asymmetric R&D under Stackelberg Structure;寡头竞争模型下的非对称R&D分析
An analysis on the spatial pattern of China s provincial R&D spillovers;中国省域R&D溢出的空间模式研究
