1.
Normally a headphone amplifiers has a very low output impedance which gives the amp tight control over the headphone action.
翻一下：一般情况下耳机放大器为了对耳机控制有很低的输出阻抗。
2.
Design of High Fidelity Headphone Amplifier Based on Vacuum Tube WCF Circuit
基于电子管WCF电路的高保真耳机放大器设计
3.
amplidyne exciter
微场电机放大器激磁机
4.
An instrument for examining the interior of the ear, especially the eardrum, consisting essentially of a magnifying lens and a light.
耳镜，检耳镜检查耳内部（尤其是中耳）的仪器，主要包括一个放大镜和光源
5.
Generation of 100-J sub-picosecond laser pulse in high energy Nd:glass chirped pulse amplification system
钕玻璃啁啾脉冲放大器产生百焦耳亚皮秒脉冲
6.
ear muff - joint
耳机, 听筒, 受话器
7.
amplidyne servosystem
电机放大器伺服系统
8.
amplidyne control system
电机放大器控制系统
9.
amplidyne control unit
电机放大器控制部件
10.
era video amplifier
电视摄像机视频放大器
11.
film camera video amplifier
电视摄象机视频放大器
12.
tape preamplifier
磁带录音机前置放大器
13.
headphone ,earphones and combined microphonespeaker sets
头戴式耳机、耳机和组合传声器扬声器
14.
Will you need a microphone and speakers, overhead, slide or movie projector, or cassette tape deck?
您需要麦克风和扩音器、耳机、灯片或电影放映机或是卡带架装置吗？
15.
Make sure that your speakers or headphones are plugged in and that the volume is acceptable.
您应该检查扬声器或耳机是否已连接，播放音量是否可接受。
16.
"You should check to make sure that your speakers or headphones are connected and that playback volume is acceptable.
"您应该检查扬声器或耳机是否已连接，播放音量是否合适。
17.
Make sure that your speakers or headphones are connected, then do the following:
您应该检查扬声器或耳机是否已连接，播放音量是否合适。
18.
MCU Controller for Professional Audio Power Amplifier
专业音频功率放大器的单片机控制器