摘要在进行农业的种植、培育和生产的过程当中，有着许多因素都会制约作物的最终产量，比如光照强度、环境温度、空气湿度、土壤湿度以及空气中CO2的浓度。从古至今的数千年的农业种植过程当中，...

摘要城市建设水平持续提升，建筑垃圾的数量在持续提升，建筑垃圾的处理与资源化利用已成为环保部门迫在眉睫需要解决的一道难题。为此本文对建筑垃圾进行了专项课题研究，说明了建筑垃圾的定义以...

武汉大学硕士专业学位论文A Study On risk management of PPP waterenvironment treatment project-A case study of Nanming River comprehensivetreatment project in Guiyang

目录摘要.目录11绪论。。。。。。。。。。。。。。。。11.1课题研究背景及意义1.2国内外研究现状概述.21.2.1采场围岩控制研究概述.21.2.2坚硬顶板围岩控制研究61.3龙煤集团鸡西子公司顶板压力研...

AbstractAs a new type of excellent adsorption material,sepiolite has special structuralcharacteristics that provide favorable conditions for its adsorption performance.However,sinc...

北京理工大学珠海学院2016届本科生毕业设计诚信承诺书本人郑重承诺：本人承诺呈交的毕业设计《珠海市第二人民医院废气工程设计》是在指导教师的指导下，独立开展研究取得的成果，文中引用他人的...

Design and Implementation of Urban Air Quality DataAnalysis System Based on Big DataAbstractThe air quality in cities is closely related to our lives,and even affects our physicalh...

AbstractIn recent years,the environmental problem of atmospheric pollution has graduallyintensified,in order to clearly understand the characteristics of SO2 pollution in the at-mo...

本科论文AbstractFor China,it has been standing in the east of the world as an ancient and civilizedcountry.As a large country with a population of 1.4 billion,China is facing great...

AbstractAbstractRational use of natural resources,waste reduction,industrial production,consumptionand harmony with the environment,reducing industrial activities constitute the hu...