HFC

HFC duplex transmission systems is a novel network transmission mode, which develop rapidly with the demand for value-added services of CATV and enables television transmission network system transformed fully from simplex into duplex.

有线电视HFC双向传输系统，是随着CATV增值业务的需求，单向电视传输系统面临全面改造成双向网络的现状，迅速发展起来的一种新型网络传输形式。

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Application of optical fibre to cable television HFC transmission system

有线电视HFC传输系统的光纤应用

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The Intellectualized Community Service System by HFC Network

通过HFC网实现的智能化小区服务系统

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Maximum total pressure uncertainty of HFC-125 data is estimated to be within 1.2 kPa.

实验数据的最大不确定度小于1.2kPa。

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Method of Effectively Suppressing Noise in Return Channel of HFC Network

HFC网络回传通道有效抑制噪声的方法

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Cable Modem is the terminal device of HFC broadband access network.

CABLE Modem就是HFC宽带接入网的用户端设备。

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This paper introduces structure, character, main design and method of adjustment of CATV two-way HFC network.

系统介绍有线电视 双向 HFC网络 的结构 、 特点 、 设计要点与调整方法.

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In this paper , we briefly describe the state-of-the-art and future trends of the Coax ( HFC ) network.

简要论述了当前 HFC 网的技术水平和将来的发展趋势.

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The advent of HFC network infrastructure established the bidirectional basis of CATV network.

HFC网络结构的出现为CATV网络的双向通信提供了实现基础.

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A comparison of thermodynamic equations in the state of HFC-134a

HFC－134a状态方程的比较

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However , the HFC —134 a refrigerator consumed about 4％ more electricity than the CFC —12 refrigerator.

但用HFC——134a时的耗电量约比CFC——12增加4%.

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House Terminal of Two-way HFC Access Network

双向HFC接入网的用户家庭终端简介

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HFC ( Hybrid Fiber Coax ) access network is attached great importance because of its tremendous bandwidth and relative economy.

HFC ( HybridFiberCoax ) 接入网以其相对的经济性和巨大的带宽受到广泛重视.

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The preparation of HFC-32 by catalytic hydrogenation of CFC-12 was explored.

探索了二氟二氯甲烷(CFC -12 )催化加氢制备HFC -32 的方法.

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By the new method, the intermolecular potential ( SW, LJ, Kihara ) parameters of HFC 125 was determined.

利用新方法拟合得到了HFC125的方阱 、 LJ ( 6, 12)及Kihara势能函数的势能参数.

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Flow State of HFC-23 Extinguishing Agent in Pipeline

三氟甲烷灭火剂在管网中流动状态分析

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HFC-245 fa ( 1,1, 1,3, 3-pentafluoropropane ) is one of the substitute compounds for CFC, HCFC.

HFC-245fa即1,1,1,3,3-五氟丙烷 ( 1, 1,1, 3,3-pentafluoropropane ),是一种取代CFC 、 HCFC的化合物.

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The Study and Implement of Information Share System Based on CATV HFC Networks

基于有线电视HFC网络的信息共享系统

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Theory and Practice of HFC Reverse Network Debug ging

HFC网络反向调试理论和实践

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Implementation of video transmission techniques in VOD system based on HFC network

HFC网VOD系统视频传输技术实现

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This paper describes Hunan district-country multimedia video conference system based on HFC.

主要介绍了基于宽带图象通信网的湖南省-地多媒体电视会议系统.

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It compares the technological economy ratio and practical applicability of HFC, HDSL, ADSL and FTTC.

比较了高比特率数字用户线(HDSL) 、 不对称数字用户线(ADSL)、光纤到路边(FTTC)、光缆同轴混合网的技术经济比及实用性.

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For instance, DuPont, the chemicals company, invites consumers to pay$ 4 to eliminate a tonne of carbon dioxide from its plant in Kentucky that produces a potent greenhouse gas called HFC-23.

例如，化工公司杜邦（DuPont）在肯塔基州的工厂每减少1吨二氧化碳排放，就要求消费者支付4美元。这个工厂产生一种强力温室气体三氟甲烷（HFC23）。

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At last, the key techniques on physical dependent layer of DS-CDMA upstream scheme are studied.

研究了HFC网络的DS-CDMA上行多址接入技术, 主要是物理层方面要解决的一些问题.

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According to the blank of the present domestic VOIP technology application on HFC network, here gives a lot of corresponding research and the test in this article.

本文针对目前国内HFC网络上VOIP技术应用的空白，进行相应的研究和测试。

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This paper summarizes some understanding and experience of two-way HFC network design and transmission system debugging.

文章对双向HFC网络的设计和调试总结了一些粗浅的认识和经验.

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Multimedia Terminal Adapter Based on HFC VoIP Platform

HFC语音平台中的多媒体适配器MTA

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HFC Network Management System Based on HMS and SNMP Protocols

基于HMS和SNMP协议的HFC网络管理系统

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HFC ( Hybrid Fiber Coax ) provides a kind of broadband access way for multimedia and broadband services.

HFC ( HybridFiberCoax ) 为多媒体和宽带业务提供了一种宽带接入方式.

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Applications : XDSL , HFC , Home PNA , STB , Cable modem etc.

电缆调制解调器等通信设备中.

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