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
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
Failure analysis is invaluable in the learning process of electrostatic discharge (ESD) and electrical overstress (EOS) protection design and development [1–8]. In the failure analysis of EOS, ESD, and latchup events, there are a number of unique failure analysis processes andinformationthatcanprovidesignificantunderstandingandillumination[4].Today,thereis still no design methodology or computer-aided design (CAD) tool which will predict EOS, ESDprotectionlevels,andlatchupinasemiconductorchip;thisisoneofthesignificantreasons why failure analysis is critical to the ESD design discipline.
标签： Mechanisms Failure Models ESD and
上传时间： 2020-06-05
上传用户：shancjb
电子cad四级考证题目练习，新手练手用，库可提供
标签： cad4
上传时间： 2020-12-15
上传用户：
一份AD15的软件练习题，电子cad的四级考试题目。提供给新手练习用
上传时间： 2020-12-15
上传用户：
一份AD15的软件练习题，电子cad的四级考试题目。提供给新手练习用
上传时间： 2020-12-15
上传用户：
各种类杆塔图纸，CAD资源，35kv-110kv铁塔
上传时间： 2021-01-13
上传用户：
Semtech SX126X系列Lora芯片相关参数文档
上传时间： 2021-11-28
上传用户：
