河南省安阳市华龙农庄制粉大楼招标控制价
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三和经贸公司期间费用管理研究
本科论文AbstractChina's economic and trade enterprises are facing increasingly fierce competitionenvironment.At this time,China's economic and trade enterprises are required to imp...
珙桐AP2ERF家族苞片发育相关基因的克隆鉴定及功能研究
AbstractDavidia involucrata is a deciduous tree with wild species only growing in southwest andcentral China.The base of the Davidia involucrata inflorescence has opposite bracts a...
基于单片机的超声波测厚仪设计
铜陵学院毕业设计AbstractUltrasonic technology can quickly and accurately measure the thickness of metal andnon-metal materials and pollution-free,so it is very suitable for nondest...
年产2.0万吨醋酐精馏工段的初步设计与模拟优化
北京理工大学珠海学院2020届毕业生设计Preliminary Design and Simulation Optimization of DistillationSection with Annual Output of 20,000 Tons of Acetic AnhydrideAbstractFor a long ti...
基于GSM的智能快递箱设计
北京理工大学珠海学院2020届本科生毕业设计Design of Smart Courier Box Based on GSMAbstractSmart express box is a service equipment based on GSM and single chip system 24 hours aday s...
北理工珠海学院校园快递包装回收模式研究
北京理工大学珠海学院2020届本科生毕业论文诚信承诺书本人郑重承诺:我所呈交的毕业论文《北理工珠海学院校园快递包装回收模式研究》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...
多项分数阶常微分方程的数值积分法
Numerical integration method for multiple fractional ordinarydifferential equationsAbstract In recent years,fractional calculus has been used to solve various problemswith genetic ...