1.
An analytical method for electro-acoustic performances of underwater acoustic transducer
水声换能器电声特性的一种分析方法
2.
listener's echo
受话者回声，电话回声
3.
noise-killing battery
消杂音电池，消噪声电池
4.
combined microphone/speaker set for telephony or telegraphy
组合传声器/扬声器,电话或电报用
5.
in the days of the silent film and the early talkies
在无声电影和早期有声电影那个时代
6.
There was a sharp snap.The voice had stopped.
啪的一声，电幕上的说话声中断了。
7.
" Electric,sonic properties and measuring methods for sound level meters"
GB/T3785-1983声级计的电、声性能及测试方法
8.
loudspeaker electrostatic mounted in its enclosure
静电式扬声器,装在扬声器箱内
9.
Determination of sound power levels of noise emitted by household electrical appliances
GB/T4214-1984家用电器噪声声功率级的测定
10.
The Peak Pressure Formula for the Acoustic Effect of the Energy Charged Particles
高能荷电粒子声效应的声压峰值公式
11.
blimp (casing) for cinematographic projectors
电影放映机防声罩（箱）
12.
not able to conduct heat or electricity or sound.
不能传导热、电或者声音。
13.
stereo sound television broadcasting
立体声伴音电视广播
14.
She was jarred awake by the ringing telephone.
她被电话铃声惊醒。
15.
I was roused by the telephone bell.
我被电话铃声惊醒。
16.
Atmospheric Acoustics,Optics,Electricity & Upper Atmospheric Physics
声光电及高层大气物理
17.
The wind set up a humming in the wires.
风使电线发出嗡嗡声。
18.
V-mail [video-mail ]
声像电子邮讯系统［