【正文】 l Controller直接數(shù)字控制器DDW:Data Describing Word 數(shù)據(jù)描述字通信專(zhuān)業(yè)英語(yǔ)詞匯(2)DECT:Digital Enhanced Cordless Telemunication增強(qiáng)數(shù)字無(wú)繩通訊DFB:Distributed Feedback 分布反饋DID:Direct Inward Dialing 直接中繼方式，呼入直撥到分機(jī)用戶(hù)DLC:Data Link Control Layer 數(shù)據(jù)鏈路層DLI:DECT Line Interface DODI:Direct Outward Dialing One 一次撥號(hào)音DPH:DECT Phone DRC:Directional Response Cahracteristics 指向性響應(yīng)DS:Direct Sound 直正聲DSP:Digital signal Processing 數(shù)字信號(hào)處理DSS：Deiision Support System 決策支持系統(tǒng)DTMF:Dual Tone MultiFrequency 雙音多頻DTS:Dual Technology Sensor 雙鑒傳感器DWDM:Dense Wavelength Division Multiplexing 密集波分復(fù)用DXC:Digital CrossConnect 數(shù)字交叉連接E:Emergency lighting照明設(shè)備E:Equalizer 均衡器E:Expander 擴(kuò)展器EADFB:Electricity AbsorbDistributed Feedback 電吸收分布反饋ECC:Embedded Control Channel 嵌入或控制通道EDFA:ErbiumDoped Fiber Amplifier摻餌光纖放大器EDI:Electronic Data Interexchange 電子數(shù)據(jù)交換EIC:Electrical Impedance Characteristics 電阻抗特性EMC：Electro Magnetic Compatibiloty 電磁兼容性EMI:Electro Magnetic Interference 電磁干擾EMS:Electromagnetic Sensitibility 電磁敏感性EN:Equivalent Noise 等效噪聲EP:Emergency Power 應(yīng)急電源ES:Emergency Sooket 應(yīng)急插座ES:Evacuation Sigvial疏散照明 ESA:Error SecondA 誤碼秒類(lèi)型ＡESB:ErrorSecondB 誤碼秒類(lèi)型ＢESD:Electrostatic Discharge靜電放電ESR:Errored Second Ratio 誤碼秒比率ETDM:Electrical Time Division Multiplexing電時(shí)分復(fù)用ETSI:European Telemunication Standards Institute歐洲電信標(biāo)準(zhǔn)協(xié)會(huì) F:Filter 濾波器FAB:Fire Alarm Bell 火警警鈴FACU:Fire Alarm Contrlol Unit 火災(zāi)自動(dòng)報(bào)警控制裝置FC:Failure Count 失效次數(shù)FC:Frequency Converter 頻率變換器FCC:Fire Alarm System 火災(zāi)報(bào)警系統(tǒng)FCS:Field Control System 現(xiàn)場(chǎng)總線FCU：Favn Coil Unit風(fēng)機(jī)盤(pán)管FD:Fire Door 防火門(mén)FD:Flame Detector 火焰探測(cè)器FD:Floor DistributorFD:Frequency Dirsder 分頻器FDD:Frequency Division Dual 頻分 雙工FDDI：Fiberdistributed Data Interface光纖纜分布式數(shù)據(jù)接口。control 云臺(tái)及云臺(tái)控制器PC:Proximinty Card 接近卡PCM:Pulse Code Modulation 脈沖編碼調(diào)制PCS:Personal Communication Service個(gè)人通訊服務(wù)PDFA:PraseodymiumDoped Fiber Amplifier 摻鐠光纖放大器PDH:Plesiochronous digital Hierarchy 準(zhǔn)同步數(shù)字系列PDN:Public data network 公用數(shù)據(jù)網(wǎng)PDS:Premises Distribution Systemn建筑物結(jié)構(gòu)化綜合布線系統(tǒng) PF:Pressurization Fan 加壓風(fēng)機(jī)PG:Pressure Gradient 壓差式PID:Passire Infrared Detector 被動(dòng)式紅外傳感器PJE:Pointer Justification Event 指針調(diào)整事件PLC:Programmerable Logic Controller 可編程控制器PM:Power Matching 功率匹配PMS:Prooerty Management system 資源管理系統(tǒng)PO:Pressure Operated 壓強(qiáng)式POH:Path Overhead 通道開(kāi)銷(xiāo)PPI:PDH Physical InterfacePDH物理接口Preamplification :前置放大PRI:Primany Rate Interface 基群速率接口PRM:Patter Recogniton Method模式識(shí)別法PSC:Protection Switching Count 保護(hù)倒換計(jì)數(shù)PSD:Photoelectric Smoke Detector 光電感煙探測(cè)器PSD:Protection Switching Duration保護(hù)倒換持續(xù)時(shí)間PSK:Phase Shift Keying 移相鍵控PSNT：Ponver Sum Next 綜合近端串?dāng)_PSPDN:Packet switched Public Data Network 公眾分組交換網(wǎng)PSTN:Public Switch Telephone Network 公用交換電話網(wǎng) PU:Pick Up 拾音器PVC:Polyvingl chloride 聚氯乙烯PVCS:Public video conferring system 公用型會(huì)議電視系統(tǒng)PWS:Power system 電源系統(tǒng) ITUT:International Telemunication UnionTelemunication Sector國(guó)際電信聯(lián)盟電信標(biāo)準(zhǔn)部 R:Receiver 終端解碼器R:Reverberator 混響器RC:Radio Communication移動(dòng)通信RC:Room’s Coefficient 房間系數(shù)RCU:Remote Control Units 終端控制器RDI:Remote Defect Indication 遠(yuǎn)端失效指示REG:Regenerator 再生器Resolution:清晰度RF:Radio Frequency 射頻RHE:Romote Head End 遠(yuǎn)地前端RMC:Repeater Management Controller天線信道控制器 RMS:Root Mean Square 均方根值RMU:Redundancy Memory Unit 冗佘存貯器RORTD:Rate Of Rise Thermal Detector 差溫探測(cè)器RR:Reverberation Radius 混響半徑RS:Reflected sound 反射場(chǎng)RSOH:Regenerator Section Ouerhead 再生段開(kāi)銷(xiāo)RSSI:Radio Signal Strength Indicator RST:Regenerator Section Termination 再生段終端RSU:Remote Subscriber Unit 遠(yuǎn)端用戶(hù)單元RT:Real Time 實(shí)時(shí)RT:Reverberation Time 混響時(shí)間RWS:Remote Workstation 遠(yuǎn)端工作站S:Sprinkler 分配器　S:Stereo 雙聲道S:Strike 電子門(mén)鎖SAA:Sound Absorption Ability 吸聲能力SAR:Segmetation and reassem