The set up of free field acoustic space and the design of device for spatial acoustic stimuli.
研究主要分为三部分:第一部分:自由声场的建立与空间给声装置的研制声源定位是长久以来听觉功能研究的热点问题。
The influence for free field by the measuring plate,which is used to lay the sound source,is related to the frequency.
消声室内放置声源的平台对自由声场的影响与频率有关。
To perform an inspection test of free field in anechoic room, some questions that are the test signal, the directivity of sound source, and the sound center calibrating of sound source must be paid attention to.
要做好消声室自由声场的鉴定测试,必须考虑采用什么样的信号源、声源的指向性、声源场中心的校正等几个重要问题。
The analysis of free sound field in the anechoic room;
消声室自由声场仿真分析
free-field sensitivity of microphone
传声器自由声场灵敏度
free-field frequency response of microphone
传声器自由场频率响应
at the free market, the peddlers make a hubbub of noise.
自由市场上, 小贩的喧叫声一片。
Acoustics--Free-field calibration method of underwater sound transducers
GB/T3223-1994声学水声换能器自由场校准方法
Noise prediction of submerged free jet based on theory of acoustic analogy
基于声模拟理论的水下自由射流场噪声预报
Active Noise Control Using Acoustic Holography in Local Free Space
利用声全息方法实现自由场局部有源噪声控制
Active Noise Control Using Near-Field Strategy in Local Free Space
采用近场误差策略的自由场局部有源噪声控制
Acoustics--Determination of sound power levels of noise sources using sound pressure--Engineering method in an essentially free field over a reflecting plane
GB/T3767-1996声学声压法测定噪声源声功率级反射面上方近似自由场的工程法
The Roundtable statement invokes the principles of the free market system.
企业界圆桌会议的声明援用了自由市场制度的原则。
A Harbinger in the Introduction of Market Mechanism After the Completion of Socialist Transformation:Chen Yun and the Opening of Rural Free Markets in 1956;
社会主义改造完成后引入市场机制的先声——陈云与1956年农村自由市场的开放
market-disciplined free-enterprise economy
由市场因素决定的自由企业经济体系
Electron-Atom Free-Free Transition in the Presence of a Bichromatic Laser Field
双色激光场中电子对原子的自由—自由跃迁
the bell of Independence Hall; rung 8 July 1776 to announce the signing of the Declaration of Independence.
宣告自由的钟声；年月号标志着独立的钟声。
Liberty & Morality, Capacity and Market;
自由与道德、能力、市场——消极自由主义者与积极自由主义者的论战
The cows had got out of the field and were loose in the road.
牛从牧场窜出, 在公路上自由自在走动.
Cattle and sheep are roaming at large on the ranch.
牛羊正在牧场上自由自在地漫游。
From every mountainside, let freedom ring.
让每一处山坡都响彻自由的回声吧!
a professed opponent of free trade
公开声称反对自由贸易的人