向量的向量积在中学数学中的应用
目录言11向量的向量积在中学数学中的应用的国内研究综述…22向量的向量积有关的知识32.1两向量的向量积……32.1.1向量积的定义…32.1.2向量积的运算规律…42.2向量积的坐标运算……43利用向量的...
北京链家置地房地产经纪有限公司员工培训现状及对策研究
本科论文enterprises grow rapidly.After entering the 21st century,the national social economy is in rapid development.Inthis environment,the real estate industry,as an important fou...
RhetoricinAdvertisingEnglishandtheirTranslatingStrategies
毕业论文(设计)media(Wang Yanxi,2004).From the definition of advertising,it can be learned that tobe persuasive is the main function for advertising to play.Besides this function,...
TheIncorporationofNewspapersinChina’sHighSchoolEnglishTeaching
毕业论文(设计)摘要本文通过分析报纸作为教学资源的优势与采用课本的不同之处,试图探讨运用英文报纸进行中国高中英语辅助教学的可行性问题。目前,诸如教师、学生、环境、教材等因素在很大程...
白头翁提取工艺研究进展
1.2实验方法1.2.1白头翁水溶性物质的研究方法单因素试验:以水作为溶剂,原料使用白头翁,探究了白头翁和水的比例、提取的时间,次数和温度,这几个因素对白头翁中水溶性提取率的作用。确定三个...
豪溢嘉五金厂废水方案设计
AbstractAcid pickling wastewater is the wastewater generated when metal surfaceoxides are treated by acid pickling with sulfuric acid,nitric acid,hydrochloric acid,hydrofluoric aci...
基于激光测距的焊缝表面外观检测
Weld surface appearance detection based on laser rangingAbstractThe appearance of the welded surface is the most basic and importantcomponent to control the quality of the welding....
库尔勒香梨树光能利用效率及宿萼果和粗皮果形成因子的研究
的果实分布密度比开心形树高几倍到几十倍,而47年生树的差异不太明显。5人工授粉明显提高库尔勒香梨的座果率,但萼片脱落与人工授粉之间没有直接关系。在宏观上,萼片脱落主要与树势有关,营养...