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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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IP Multimedia Subsystem(IMS) Handbook
Fixed-mobile.convergence.and.voice-data.networks.have.merged.next-gen-
eration,.value-added.applications.and.integrated.multimedia.services,.com-
bining. Web. browsing,. instant. messaging
eration,.value-added.applications.and.integrated.multimedia.services,.com-
bining. Web. browsing,. instant. messaging
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IMS+Multimedia+Telephony+over+Cellular+Systems
This preface is somewhat different from prefaces found in similar books because it does not
focus so much on the content of the book.We have instead chosen to write a few words about
our o
focus so much on the content of the book.We have instead chosen to write a few words about
our o
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The 3G IP Multimedia Subsystem (IMS)
When 3GPP started standardizing the IMS a few years ago, most analysts expected the
number of IMS
number of IMS
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基于IMS的早期媒体类业务
通过对基于IP 多媒体子系统(IMS)网络的多媒体彩铃业务与多媒体彩像业务在业务协作方面的分析，指出现有早期媒体类业务解决方案中存在的问题，提出一种基于early-session的扩展方式，可以在同一