摘要01绪论1.1研究的背景和意义1.1.1人类的生存环境问题突出近些年来，经济增速加快，工业发展迅速，与此同时，能源的消耗量也在逐渐增加。在能源消耗中，会排除一定的污染物，这些污染物对大气...

AbstractIn the process of modern agricultural production,with the advent ofagriculture greenhouses,the process of plant growth can no longer restrictedto the natural environment co...

3.3.1注册模块的实现133.3.2登录模块的实现..143.3.3我的模块的实现143.3.4购物车模块...153.3.5门店模块...153.3.6首页模块..163.4APP的使用介绍....173.5本章小结......174.结论.……184.1主...

AbstractFault tolerance is one of the main problems in WSN,because it becomesvery important in the actual deployment environment,in which networkstability and reduced inaccessible ...

毕业设计说明书（论文）外文摘要TitleCaroline Movie Ticketing System Based on AndroidAbstractIn the form of the rapid development of Internet technology,the frequency of modernpeople...

Study on the Chinese classroom rewards in primary schoolsAbstract:Classroom reward is one of the important mechanisms to play a positive role inprimary school Chinese class.Classro...

苏州科技大学硕士论文AbstractAbstractSince the reform and opening up,China's rapid economic development,the Chinesenation entered the stage of Renaissance,this society will continue...

本科论文摘要为了让水平仪成为生产制造过程中的得力助手，实现倾角的高精度、便捷测量的功能。使其拥有多种功能应对检测情况，在生产过程中可以有效地减小生产误差，保证产品质量，落实安全生产...

Abstract硕士论文功率平坦度小于0.5dB,近远端杂散以及二次谐波的抑制均大于65B,最差的相位噪声水平也优于96dBc@10KHz。关键词：防撞雷达信号源锁相环直接数字频率合成

目录1绪论…11.1研究背景1.2变换器简介21.3本文研究的内容…32DC-DC变换器的工作原理..42.1DC-DC变换器的基本电路图及工作原理…42.2BUCK变换器.…62.2.1线路组成。…62.2.2工作原理.723带变压...