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quantizing
量化
decision value
判决值
compaanding law
压扩律
primary group
一次群
secondary group
二次群
code rate justification
码速调整
regeneration and repetition
再生中继
timing jitter
定时抖动
local telephone network
地区电话网
railway local telephone
铁路地区电话
single-office system
单局制
multi-office system
多局制
branch telephone office
分电话所
central telephone office
中心电话所
tandem telephone office
汇接电话所
minor telephone office
支电话所
manual telephone office
人工电话所
local telephone switching system
地区电话交换机
magneto telephone switch board
磁石电话交换机
common battery telephone switch board
共电电话交换机
step-by-step telephone switching system
步进制电话交换机
crossbar telephone switching system
纵横制电话交换机
electronic telephone switching system
电子电话交换机
stored program controlled telephone switching system
程控电话交换机
register
记发器
code sender
发码器
decoder
译码器
marker
标志器
direct plug-in subscriber
直插用户
limited subscriber
限制用户
special subscriber
特种用户
distant subscriber
远距用户
interposition trunk
台间联络线 or 座席间中继线
inter office through trunk
局间直通中继方式
calling subscriber demandeur
主叫控制复原方式
called subscriber release
被叫控制复原方式
called and calling subscriber release
互不控制复原方式
division communication
区段通信
interstation telephone
中间站公务电话 or 各站电话
train dispatching telephone
列车调度电话
freight dispatching telephone
货运调度电话
power dispatching telephone
电力调度电话
interstation train operation telephone or blocking telephone
站间行车电话 or 闭塞电话
track maintenance telephone
养路电话
track-side telephone
区间电话
buidge and tunnel guarder telephone
桥隧守护电话
track-side telephone switching device
区间电话转接机
tarty-line automatic telephone
共线自动电话
VF selective calling
音频选叫
general calling
全呼
group calling
组呼
individual calling
单呼
dispatching telephone control board with VF selective calling
音选调度电话总机
dispatching telephone subset with VF selective calling
音选调度电话分机
tandem distributor for dispatching telephone with FV selective calling
音选调度电话汇接分配器 or 调度分配器
selective calling and talking box for dispatching office
调度所选叫通话箱
tarty-line telephone control board with VF silective calling
音选同线电话总机
praty-line telephone distributor for VF selective calling
音选同线电话分配器
party-line telephone subset with VF selective calling
音选同线电话分机
two-way repeater for VF selective calling or two-way repeater
音选双向增音机 or 双向增音机
bridging filter for dispatching telephone with VF selective calling
音选调度电话滤波器
command telephone control board
指挥电话总机
train out report telegraph
列车确报电报
station-yard communication
站场通信
railway station telephone
铁路站内电话
switchman's telephone
扳道电话
concentrated telephone unit
电话集中器
control set for sound amplifying in yard
扩音转接机
speaking post in yard
扩音柱
optical fiber
光纤
single-mode optical fiber
单模光纤
graded index multimode optical fiber
多模渐变型光纤
core diameter
芯径
cladding diameter
包层直径
coating
被覆层
refrative-index profile
折射率分布
numerical aperture
数值孔径
mode field diameter
模场直径
core concentricity
芯同心度
non-circularity of core
芯不圆度
total internal reflection
全反射
guided modes
传导模
radiation modes
辐射模
leaky modes
漏泄模
attenuation constant
衰减常数
chromatic dispersion constant
色散常数
near field
近场
far field
远场
cut-off wavelength
截止波长
bandwidth of an optical fiber
光纤带宽
optical line terminal equipment
光线路终端设备
average optical output power
平均输出光功率
receiver sensitivity
接收机灵敏度
receiver dynamic range
接收机动态范围
operating wavelength
工作波长
optical transmission mode
光传输模式
optical source
光源
laser
激光器
light-emitting diode or LED
发光二极管
optical detector
光探测器