引言我国是矿业大国，随着矿山数量和规模不断增加，矿业开发的负面影响也将日益扩大。正在开采或已废弃的金属矿山是人为和天然的土、水生态环境污染源。矿坑排出的富含金属离子的酸性废水、废石...

北京理工大学珠海学院2020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《广西百色市顺丰物流仓库门式刚架结构设计》是在指导教师的指导下，独立开展研究取得的成果，文中引...

The design and implementation of the resources network for the postgraduateentrance examination of Suqian UniversityAbstract After graduation,further study has become another choic...

AbstractAbstractIn the face of the pressure of the talent cultivation program,people need to learnmore knowledge in different fields to constantly expand their knowledge level,so t...

产生质的飞跃。关键词：模态分析法；高压隔离开关；在线监测与故障诊断；变电站：系统设计

AbstractAlso known as stroke,stroke is considered one of the three big killers humanhealth,causing limb hemiplegia after a stroke can not carry out normal life activitiesof risk mo...

北京理工大学珠海学院2020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《某地区污水规划设计》是在指导教师的指导下，独立开展研究取得的成果，文中引用他人的观点和材料，...

感背淋师苑大季Capital Normal Unlversity首都师范大学本科生毕业论文（设计）原创性承诺书论文（设计）题目我国典型城市土壤重金属分布特征及污染评价学生姓名专业地理科学（师范）学号1170901...

AbstractA keggin-type polyoxotungstates compound [Cu(2,2'-bpy)2]2[Ge W12040]2H2Owas synthesized by hydrothermal method.The crystal structure of the compound was determined by X-ray...

Research on End Mill Wear Detection Based on Machine VisionAbstractIn the milling process,there is inevitably end mill wear.when the wear and tear is nottimely feedback to the staf...