微生物法处理污水臭气技术的研究
AbstractSewage treatment stations to deal with the odor generated by sewage,thisproblem has now become a major environmental problem to be solved in China.Hydrogen sulfide and ammo...
以甲醇和甲醛水溶液为原料生产甲缩醛工厂设计
Plant design of producing methylal from methanol andformaldehyde aqueous solutionAbstractMethylacetal,also known as Dimethoxymethane (DMM),is an excellentenvironment-friendly solve...
鸿星尔克运动鞋定价策略研究
ABSTRACTWith the rapid development of China's sportswear industry,especially the running footwearcategory,it has not only grown sharply in scale,but also has a higher and higher gl...
基于“导学案-微课”培养初一学生数学预习能力的探索
AbstractPre-learning ability is the first step to improve students'self-learning.Abstractionis the subject nature of mathematics,and it is also a great obstacle for middle schoolst...
类比思想在中学数学中的应用
AbstractAnalogy is a common mathematical method in middle school mathematics.Analogy iswidely found in the concept,formula,nature and problem solving of middle school mathematics.M...