消声

There is some constructive propose for soundproofing ,shock produces, fire preclusion and fame abreaction of system.

本设计中还对冷水机组、空调箱、风机盘管及其附属设备的选型也进行了详细的计算和说明，对空调系统的消声、减震、防火和排烟也提出了一些建设性建议。

There is no noise elimination measure and noise standards to AHU, air supply unit, exhaust fans.

4空调机组、新风机组、排风机均无消声措施及噪声指标。

According to resonant principle, a suitable resonant chamber is designed for intake system. The low frequency sound pressure level is decreased in the body. The high frequency noise is improved through damping air filter brace.

因此，采用共振消声的原理，设计了合适的共振腔，降低了低频噪声成分，并采用阻尼降噪技术，对空气滤清气的支架进行了处理，降低了高频噪声成分。

A computer simulation of ANC in space is given in the paper, which can deal with those problems in more general way.

本文还提出了空间有源消声的计算机模拟方法，适合于处理这些问题更一般的情况。

The advanced microprocessor enables ENHANCEMENT of the weakest sounds like those in non-metallic pipes or those in sound muffling conditions.

先进的微处理器能够增强最弱的，好像那些在非金属管道或那些在声消声条件。

Since the late eighties of the 20th century, active control of interior structure borne noise within enclosures using smart materials such as lead zirconate titanate pizeoelectric actuators, etc. has become a hot research area in the field of noise control.

二十世纪八十年代后期以来，利用压电陶瓷等智能材料进行封闭空间结构声辐射的有源消声成为噪声控制领域中的一个研究热点。

Through further numerical calculations and analysis, the rule of influence on acoustic radiation with respect to certain structural parameters ,as well as with respect to those of sound-absorbing layers, are discussed in detail.

通过进一步数值计算及分析，详细讨论了结构及消声瓦的各参数对远场声辐射的影响规律。

Anechoic tile is a kind of the sound-absorbing robber.

消声瓦是一种具有吸声性能的橡胶块。

The conˉstruction of noise damping tower to form resonance cavity and the utilization of the soft noise insulaˉtion device can sovel the intermediate- lowfrequency noise .

通过研究2K58-28型轴流风机的噪声问题，阐述了建消声塔形成共振腔及采用软隔声装置等办法解决中、低频噪声治理难题。

Based on the integration of the results of acoustic andfluid dynamic analysis, this paper points out that synthetical acoustic and fluiddynamic performance of muffler can be obtained by using square expansion chamber,by stringing together several podgy expansion chambers, by applying noise absorbingmaterial on chamber walls, by making chambers and pipers co-axial, by adding filletson the end of intruding pipes, and by making the diameter of outlet pipe a little greaterthan the diameter of the inlet pipe.

通过综合流体力学和声学有限元两方面的分析的结果，指出了采用方形扩张腔，采用多个短粗扩张腔串联，扩张腔壁面附吸声材料，使各管道同轴，在插入管端口加上圆角，并且令出口插入管管径略微大于入口插入管管径可以使消声结构获得最佳的声学和流体力学综合性能。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。