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你对功率因数有哪些误解？
最近有做逆变器的客户咨询功率因数测量，客户想了解逆变器的功率因数应该是在怎么样的负载条件下测量的，阻性？容性？还是感性？其实里边存在一个很大的理解误区，忽视这种误区会导致逆变器的生产厂家和使用厂家出现比较严重的分歧。
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this is a flash opening for someone who like to download
this is a flash opening for someone who like to download
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nucleus usb api, maybe usefull for someone
nucleus usb api, maybe usefull for someone
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USACO chapter one.May hope it useful to someone
USACO chapter one.May hope it useful to someone
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Tsis is a satelit handbook and I hope that can help someone.
Tsis is a satelit handbook and I hope that can help someone.
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该类支持哪些接口；2． 完成任务需要哪些对象；3． 如何使用该类的对象；4． 是否可以直接实例化类；5． 接口有哪些方法和属性；6． 是否有其它类也支持该接口；7． 对象间的关系
该类支持哪些接口；2． 完成任务需要哪些对象；3． 如何使用该类的对象；4． 是否可以直接实例化类；5． 接口有哪些方法和属性；6． 是否有其它类也支持该接口；7． 对象间的关系
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This book is for someone who wants to quickly master the basics of how to install, run, and maintai
This book is for someone who wants to quickly master the basics of how to install, run, and
maintain
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PCB设计中都有哪些间距需要考虑？
PCB设计中有诸多需要考虑到安全间距的地方。在此，暂且归为两类：一类为电气相关安全间距，一类为非电气相关安全间距。
1.电气相关安全间距：
导线之间间距
据主流PCB生产厂家的加工能力，导线与导线之间的间距不得低于最小4mil。最小线距，也是线到线，线到焊盘的距离。从生产角度出发，有条件的情况下是越大越好，一般常规在10mil比较常见。
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the template for IEEE paper, this is very useful for someone who plans to paper his studying in IEEE
the template for IEEE paper, this is very useful for someone who plans to paper his studying in IEEE.
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Wheel of fortune game I made for someone. Written in pure Java/Swing only
Wheel of fortune game I made for someone. Written in pure Java/Swing only