1	报头	message preamble;message header;preamble of the cable;heading of telegram
2	变频级	translating stage;frequency translation stage;frequency converter stage
3	布线	electrical wiring;routing;running board;connecting up;conductor configuration;wire
4	查号台	directory position;directory assistance position;directory assistance bureau;directory assistance board
5	差阈	difference threshold;difference sensitivity;difference limen;differential limen
6	场同步	field locking;field synchronization;vertical hold;vertical synchronization
7	超音频	super telephone frequency;superaudible frequency;hyperacoustic frequency
8	触排	line bank;row of contacts;terminal assembly;cross connecting field;bank;arc
9	地球站	communication satellite earth station;earth station;terrestrial station;ground station
10	电抗管	reactance valve;valve reactor;quadrature tube;reactance tube;tube reactor
11	分频	fractional frequency;frequency demultiplication;scaledown;frequency division;demultiply;scalingdown;dividing frequency
12	跟踪器	servo system,servo-mechanism,servo-system,servomechanism,servosystem,tracker
13	管座	lamp socket;vacuum tube socket;valve support;tube base;pinhole aperture
14	呼损率	proportion of lost calls;lost call rate;call lose rate;percent of call lost
15	汇接局	cross office;junction tandem exchange;through trunk exchange;transit exchange;tandem station;transit trunk exchange;switching office;tiestation;tandem office;through exchange
16	混响室	reverberant room;reverberation chamber;live room;reverberation room;echo chamber
17	监听台	monitor desk;listening position;monitoring desk;monitor board;monitors table;supervisors desk
18	鉴频器	frequency discrimitator;frequency detector;frequency discriminator;discriminator;frequency sensitive detector
19	角频率	circular frequency;pulsatance;cyclic frequency;palstance;angular frequency
20	接通	keyingon;establishment;cutin;place in circuit;turn up;putting through;access success;call through
21	接线板	wiring board;clamper;wire board;patching board;terminal plate;termination block;mounting panel
22	禁止门	and not gate;exclusive gate;inhibit gate;exclusion gate;inhibitor;except gate
23	空号	number unobtainable;unallocated number;vacant number;unobtainable number;open number;idle pattern;dead number;space;spacing
24	空号音	nu tone;no such number tone;vacant code fone;number unobtainable tone;woo woo tone;dead lexel signal
25	控制室	control room;control cubicle;control chamber;console cabinet;control booth
26	连接线	junctor line;connecting line;adherent wire;connecting wire;connector wire
27	帘栅管	shielded plate tube;screen grid electron twbe;screen grid valve;shieded grid tube
28	帘栅极	anode grid;anode screen;screen grid;plate grid;shielded grid;priming grid
29	亮度级	tonal value;luminance level;brightness step;brightness level;intensity level
30	裸导线	uninsulated conductor;bare conductor;plain conductor;bare line conductor
31	喷灯	blast burner lamp;blow torch;soldering lamp;heating torch;torch pipe;blow lamp
32	切断	interception;shed;keyingoff;disbranch;key off;clip;elimination;turnoff;killing;throw out;switch off
33	闪光	glisten;outburst;glint;light flare;gleam;glare;flare light;light flash;flashing light;glimmer;flare
34	试电笔	electroscope voltage detector;test pencil;screwdriver with voltage tester;voltage indicator
35	室内线	inside wire;substation wire;house line;house wire;interior wire;indoor wire
36	速调管	klystron;transit time tube;velocity modulation tube;velocity modulated tube
37	天线杆	radio mast;antenna support;antenna mast;antenna pole;antenna spike;tower
38	停电	power outage;power blackout;interruption of service;power supply failure
39	显像管	image tube;kine;kinescope tube;viewing tube;visual display tube;oscillight;teletron;picture tube;kino lamp;image reproducer tube
40	长途台	toll switchbroad;trunk position;trunk line board;toll point;trunk operator position;toll station

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