成都理工大学硕士学位论文C-N偶联反应合成N-(2-卤芳基)氨基酸酰胺。本论文研究内容主要包含三个部分：首先，选择邻溴碘苯和L-丙氨酰胺盐酸盐为底物，进行反应条件的优化，对该反应体系中催化剂...

Abstract[Objective]The common gene fragments of all species and genera of Brucella were screened,and theprimers and probes suitable for amplification of target genes were designed....

而在商品的定价中，最主要的因素就是产品的成本。不计代价的降价，必输于竞争。1.1.2成本管理的内容成本管理的内容有：①工厂的成本控制工厂的成本管理主要由财务部门承担，大型企业通常要设立...

2.实践意义：在当前互联网+趋势的大环境下，网络侵权主体的复杂性，侵权行为的隐蔽性使得网络环境的安全性频频受到挑战。因此，通过对儿童个人信息保护的探究，可以助推相关制度的完善，进而有...

students are interested in the history of mathematics.In addition to mastering the knowledge ofthe history of mathematics in the textbook,they can also learn the knowledge not cove...

teachingAbstract The classification discussed ideas method for teaching and research,the use of theliterature survey method,classroom observation and questionnaire survey,get the r...

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AbstractAs the beginning of learning mathematics,primary school mathematics is acornerstone for students to learn mathematics.If students want to learn mathematicswell,the efficien...

Investigation and Research on the Use of Mathematical Multiple RepresentationLearning Theory in Mathematics Teaching in Junior Middle School-Taking SCity Z Middle School as an Exam...

AbstractDifferential mean value theorem is a general term of a series of mean value theorems.Itis a powerful tool for studying functions and can help us to analyze and study the pr...