1.
An electric signaling device, such as a doorbell, that makes a buzzing sound.
蜂鸣器可以发出嗡嗡声的一种电子信号装置，如门铃
2.
An electronic device that compresses the volume range of a signal.
一种压缩信号量范围的电子装置。
3.
A sound or a signal, as from a horn or an electronic device.
嘟嘟声一种象从号角或电子装置发出的声音或信号
4.
ELSIE (Electronic Letter Sorting and Indicator Equipment)
电子信件拣分显示装置
5.
an electronic device for producing a signal voltage.
能够产生电压信号的电器装置。
6.
equipment that receives radio or tv signals.
接收无线电或电视信号的装置。
7.
a device for converting electric signals into sounds; it is held over or inserted into the ear.
转换电力信号到声音信号的装置；插到耳朵上。
8.
An electronic device that is capable of relaying a signal without attenuation in velocity.
人造神经纤维一处能中转传递信号的电子装置，无速度上的衰减
9.
control gear and signal, level-crossing, electrically-powered
道口电动管理和信号装置
10.
equipment used to broadcast radio or tv signals.
播送收音机或电视机信号的装置。
11.
radiosonde flight equipment
无线电控空仪信号发送装置
12.
radiosonde ground equipment
无线电探空仪信号地面接收装置
13.
attenuator: a device that attenuates an electrical signal.
衰减器,减压器: 使电子讯号减弱的装置。
14.
A device that attenuates an electrical signal.
衰减器，减压器使电子讯号减弱的装置
15.
ERNIE=Electronic Random Numbering and Indicating Equipment
电子随机编号及指示装置
16.
fire-alarm, electric, incorporating sound or visual signaling devices
电动火警报警器,装有音响或视觉信号装置
17.
the part of a radio receiver by means of which radio signals are received.
通过接收无线电信号的无线电接收装置。
18.
Development and Application of a Pulse Block in Coulometric Signal Conversion Device in a Power Plant
发电厂电量信号转换装置脉冲块的研制与应用