Abstract3D printing technology is a rapid prototyping technology.which has entered astage of rapid development during the past few years.The world has made a greatprogress and has ...

江西红壤丘陵区的弃土堆置体六大研究区弃土堆置体坡面D10mm的块石和土壤结构体重力分选作用明显，小粒石与固结土块、粗粒土、中粒土、细粒土在不同坡位的含量数据变化较小且无明显规律：因此在...

Structure dseign of potato picking deviceAbstractWith the rapid development of mechanical industry,various kinds of equipment havebeen developed and used in production and life to ...

摘要随着我国科技的迅速发展与城市化的程度提高，各个地方规划和新建了大量的高层住宅、大型商业中心和办公大楼。在这之中出现了室内无线覆盖相对薄弱这个问题，仅靠室外宏基站的能力已经不能满...

AbstractThe rapid economic development and the overall leap of computer informationtechnology have been synchronized,and computer-related applications and businesseshave also enter...

1.2DDS技术的研究现状与发展趋势1971年，蒂尔尼等人在《数字频率合成》中首次提出了DDS的概念。1993年，劳伦·库什尼提出了一种高速、低功耗的新型复合式DDS结构。其结构是由低速高分辨率和相位...

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《智能家居系统一一安防系统设计》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...

An analysis of the selection and compilation of ancient poetry in the primaryschool Chinese textbook compiled by the Ministry based on the core quality-Taking a primary school in S...

AbstractIn order to make it easier and more convenient for people to listen tomusic,by utilizing the advantages and characteristics of small program'light service'for music playbac...

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