数字分频 digital frequency division
数字复接 digital multiplexing
数字复接器 digital multiplexer
数字复接体系 digital multiplex hierarchy
数字复用设备 digital multiplex equipment
数字和 digital sum
数字和之差 digital sum variation
数字话路扩容系统 digital circuit multiplication system
数字基群 primary digital group
数字集成电路 digital integrated circuit
数字交换 digital switching
数字连接 digital connection
数字链路 digital link
数字滤波器 digital filer
数字分配架 digital distribution frame
数字区段 digital block
数字色码 digital color code (DCC)
数字式寻呼系统 digital paging system
数字速率 digital rate
数字锁相环 digital phase-locked loop
数字填充 digital filling
数字调制 digital modulation
数字通道 digital path
数字位置 digital position
数字无线段 digital radio section
数字无线通道 digital radio path
数字无线系统 digital radio system
数字系列完整性 digital sequence integrity
数字信道连接 digital channel link (DCL)
数字信号 digital signal
数字信号处理 digital signal process (DSP)
数字信号的判决瞬时 decision instant of digital signal
数字信号的有效瞬时 significant instants of a digital signal
数字信令 digital signalling
数字选呼系统 digital selective calling system
数字延时器 digital time delayer
数字有线段 digital line section
数字有线通道 digital line path
数字有线系统 digital line system
数字语音编码 digital speech code
数字语音插空 digital speech interpolation (DSI)
衰落 fading
衰落包络 fading envelope
衰落带宽 fading bandwidth
衰落幅度 amplitude of fading
衰落深度 fading depth
衰落率 fading rate
衰落周期 duration fading
双T网络 twin-T network
双边带调制 double sideband modulation
双变频接收机 double conversion receiver
双波段电台 two-waveband radio station
双端同步 double-ended synchronization
双工、全双工 duplex, full duplex
双工操作 duplex operation
双工频率间隔 duplex frequency separation
双工器 duplexer
双工无线电话机 duplex radio telephone set
双极型晶体管 bipolar transistor
双列直插式封装 dual-in-line package (DIP)
双向的 bidirectional (both-way)
双向控制 bilateral control
双信号方法 two-signal method
双音多频制 dual-tone multifrequency system (DTMF)
双栅极MOS四极管 double gate MOS four terminal devices
双重调制 double modulation
水平方向性图 horizontal directivity pattern
水上数字选呼系统 maritime digital selectivity-calling system
水上移动业务 maritime mobile service
水声通信系统 hydro-acoustic communication system
水下电话 underwater telephone
水下激光通信 underwater laser communication
顺序单音制 individual tone sequential system
顺序脉冲单音制 pulsed individual tone sequential system
瞬变过程 transient process
瞬时通信 transient communication
瞬时故障 transient fault
瞬态 transient
瞬态失真 transient distortion
私人通话 private conversation
四电平调频 4-level frequency modulation (4-level FM)
四列扁平封装 quad flat package (QFP)
四线交换 four-wire switching
四相差分相移键控 quadrature differential phase shift keying (QDPSK)
四相相移键控 QPSK, quadrature phase shift keying
送话器 telephone transmitter
搜索载波 searching carrier
算信 compunication
随机存取存储器 random assignment multiple access (ALOHA)
随机服务 service in random order
随机数 random number
随机误差 random error
随机噪声 random noise
随路信令 channel associated signalling
缩短循环码 shorten cyclic codes
缩位拨号 abbreviated dial system
锁定建立时间 locked set up time
锁定时间 locking time
锁相捕获 phase-lock acquisition
锁相环 phase-locked loop
锁相环大信号特性 PLL strong signal characteristic

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