精美的的PPT模板及图标,可以作为PPT编写素材
标签: PPT模板、素材、
上传时间: 2017-06-28
上传用户:yin6448789
平时无聊制作的成绩管理系统,适合新手练手,
标签: C语言
上传时间: 2018-05-05
上传用户:woshinibabass
型货车主减速器的装配图,可用于课程设计毕业设计参考,内附全套CAD零件图,装配图
上传时间: 2018-05-14
上传用户:jianghudaye
熟悉三维CAD绘图软件特征与装配工作环境,加深对零件建模,零件装配的理解、消化,巩固课堂所学知识,掌握以SolidWorks为代表的三维CAD系统的特征建模理论方法以及其在医疗仪器中的应用。
上传时间: 2019-03-07
上传用户:00001111
真实表格,把cad里的表格到excell中,非常简单适用。
标签: truetable
上传时间: 2019-07-20
上传用户:15367819610
桦甸市桦树林子学校 视频素材校长带领学生晨跑
标签: 桦树校长领跑
上传时间: 2019-09-02
上传用户:yinge1986
用于职组织生活会汇报表格,页面美观,素材鲜亮,可多元化吸收利用。
标签: 表格
上传时间: 2020-04-09
上传用户:tianchuangshi
本文在分析 CAD 文件格式与 GIS 所需建模源文件之间差异性的基础上,介绍了数据的自动转 换获取方法,说明了 GIS 用于城市用地适宜性评价的具体操作流程,并对 GIS 在城市规划其他方面的应用 进行了展望。
标签: GIS
上传时间: 2020-04-13
上传用户:小婷婷婷
With the rapid expansion of wireless consumer products,there has been a con- siderable increase in the need for radio-frequency (RF) planning, link plan- ning, and propagation modeling.A network designer with no RF background may find himself/herself designing a wireless network. A wide array of RF planning software packages can provide some support, but there is no substi- tute for a fundamental understanding of the propagation process and the lim- itations of the models employed. Blind use of computer-aided design (CAD) programs with no understanding of the physical fundamentals underlying the process can be a recipe for disaster. Having witnessed the results of this approach, I hope to spare others this frustration.
标签: Introduction Propagation to RF
上传时间: 2020-05-27
上传用户:shancjb
This book is concerned with integrated circuits and systems for wireless and mobile communications. Circuit techniques and implementation of reconfigurable low-voltage and low-power single-chip CMOS transceivers for multiband and multi- mode universal wireless communications are the focus of the book. Applications encompass both long-range mobile cellular communications (GSM and UMTS) and short-range wireless LANs (IEEE802.11 and Bluetooth). Recent advances in research into transceiver architecture, RF frontend, analogue baseband, RF CAD and automatic testing are reported.
标签: Communication Wireless Circuits Systems and
上传时间: 2020-06-01
上传用户:shancjb