AbstractOnline second-hand book sales is a recently popular e-commerce activity.Merchantsoften reduce prices on some specific holidays,allowing large quantities of users topurchase...

北京理工大学珠海学院2020届本科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《基于蓝牙技术的考勤系统-蓝牙通信设计》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...

北京理工大学珠海学院2020届本科生毕业设计The Design of a hand-held rangefinderAbstractWith the rapid development of automated working equipment in recent years,theimplementation of ...

AbstractWith the development of modern society,the pace of modernpeople's life is faster and faster,As Benjamin Franklin said three hundredyears ago,time is money.Nowadays,the cost...

AbstractWith the rapid development of information age,the realization of theconcept of the Internet of things,make people begin to pay attention to theconvenience in life.Education...

第一章绪论高能量设备在燃气轮机上制备厚度超过1毫米的热障涂层，不仅能够大幅度提高热效率，而且还能降低冷却热端部件气体的气流量。在过去的四十年中，航空涡轮发动机领域一直采用在高温合金...

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高温和较好的延伸性能，以满足温差的变化和较强的荷载作用。根据这些要求，桥面防水施工技术人员通过总结以往的工作经验，选用了有机硅高渗透性防水材料。有机硅防水剂除了能满足上述要求外，还...

Structural design of multi-type fruit packing machine-Fruit feedingAbstractFruit is an indispensable part of People's Daily life,fruit packaging has been in themanual packaging env...