浩辰CAD插件2013用于解释DWG图纸内的浩辰2013版各专业软件自定义对象，支持浩辰CAD和AutoCAD双平台，支持64位操作系统。如果电脑上已经安装了浩辰建
2019-04-19 13:45
浸在电镀缸内并接通电流而在电路板的铜箔面上生成镍金镀层，电镍金因镀层硬度高，耐磨损，不易氧化的优点在电子产品中得到广泛的应用。那什么又是沉金呢？沉
2015-11-22 22:01
本帖最后由 eehome 于 2013-1-5 10:11 编辑 connex金线键合机编程
2012-05-19 09:03
很多电子工程师不知道镀金和沉金是怎么回事，有什么区别，本人从事layout工作，急所大家所急，不敢独享，分享给大家镀金和沉金的别名分别是什么？镀金：硬金，电金沉
2016-08-03 17:02
[爱上Arduino].(美)Massimo.Banzi.著.于欣龙，郭浩贇.译.人民邮电出版社
2020-03-29 16:44
强劲。浩都频率江苏浩都频率科技有限公司为一家专业从事压电石英晶体谐振器，石英晶体振荡器的研发、生产、销售和技术支持的高科技公司。品牌于2013年12月正式注册，公司制造中心位于江苏省江阴市临港新城，一期
2023-02-17 11:25
`· 4 channel Data Logger designed for easy setup and trouble free operation. It includes free easy to use software. · Mix and Match a Wide Range of Sensors including Temperature, Pressure, Humidity, AC current, DC Current, AC Voltage, DC Voltage, Light, Process Signals and more. stocks over 70 compatible sensors. Plus,can directly read resistances, 0-5 Vdc signals and contact closures.· Multi-year Battery Life with any combination of sensors. All sensors are powered from the logger's user-replaceable battery.· Data Logging Applications· Pressure· Temperature· AC Current· Temperature and Relative Humidity· AC and DC Voltage· · Four multi-purpose inputs; mix and match Pace sensors in any combination.· Each input will also read resistance, 0-5 Vdc or a contact closure.· Data retention of over 200 years with no power.· High accuracy, up to +/-0.15°C and +/-0.25% F.S. with no calibration.· Wide operating temperature range -40°C to 60°C (-40°F to 140°F).· Certificate of Validation, traceable to NIST, included with each unit.· Long battery life, runs unattended for over 2 years (including sensors) without external power.· Optional Pulse Module for tipping bucket rain gage, gas and water meters, and kWH meters.· Optional Scaling Module for ±5, 0-10, 0-20, 0-30, 0-60 Vdc and 4-20 ma signals.· Optional Thermocouple / Millivolt Modules for thermocouple or millivolt signal.· Easy to use Windows software (full version available for free download) for logger setup, data transfer, graphing and data export.· CE Marked.、`
2019-09-23 09:18
DN372- 电源跟踪器也可以保证金供应
2019-08-06 10:16
本帖最后由 lee_st 于 2018-3-8 08:10 编辑 程序员面试金典(第5版)-中文版
2018-03-06 22:19
自己diy双层电路板最头疼的是上下板联通问题，金电子感光板双面贯孔制作，土豆有视屏http://www.tudou.com/programs/view/l9SQCWX1a4M感兴趣的可以去看看
2013-08-18 15:43
