1)noise elimination消声量
2)large noise elimination quantity大消声量
3)sound attenuation消声
1.The ventilation and sound attenuation system are introduced to the standard building acoustic sound insulation lab to meet the requirement of sound power level measure of chair outlet′s airflow noise for China National Grand Theater.为测量国家大剧院座椅下送风风口气流噪声声功率级,对已有的标准建筑隔声实验室的接收室进行改造,引入通风系统,同时进行消声处理。
2.The noise reduction mechanism of porous asphalt pavement is analyzed from the mechanisms of porous sound absorption, as well as resonance sound attenuation and noise reduction.从多孔吸声和消声降噪两个角度解释多孔性沥青路面的降噪机理,提出采用室内实验与现场测试相结合的方法来评价多孔性路面的降噪性能,对于减少噪声污染具有积极的意义。
英文短句/例句
1.sound attenuation消声器（噪声衰减装置）
2.This method broadens the silence frequency bandwidth of muffler and improves its silence fuction.这种方法拓宽了消声器的消声频带宽度,改善了消声器的消声性能。
3.Acoustics--Determination of sound power levels of noise sources--Precision methods for anechoic and semi-anechoic roomsGB/T6882-1986声学噪声源声功率级的测定消声室和半消声室精密法
4.The sound system is armed.消声系统也严阵以待。
5.silencer-filter type air intake消声滤气器型空气进口
6.air cleaner and silencer空气净化器及消声器
7.silencer(sound deadener)噪音消声器（隔音材料）
8.The Muffler of Election竞选的“实质消声器”
9.Characteristic Simulation and Improvement of the ATV Muffler;全地域四轮车消声器消声性能仿真与改进
10.Research on Noise Elimination Characteristics and CAD of Motorcycle Muffler;摩托车消声器消声特性及计算机辅助设计研究
11.Computer Simulation of Acoustic Performance of Motorcycle Muffler;摩托车消声器消声性能的计算机仿真分析
12.Acoustic Performance Analysis and Computer Aided Design of Muffler;消声器消声性能分析及计算机辅助设计
13.Research on Attenuation Performance of a Semi-Active Exhaust Muffler Based on CFD基于CFD的半主动排气消声器消声性能研究
14.The Contrast of Simple Expanded-muffler with Large Porosity Perforated Muffler简单扩张式消声器与穿孔管消声器对比研究
15.Influence of Rotation Velocity of Diesel on the Noise Elimination of Resistance Muffler柴油机转速对抗性消声器消声效果影响的研究
16.noise-killing battery消杂音电池，消噪声电池
17.Adaptive echo cancellation and noise reduction algorithm一种自适应回声抵消和噪声消除算法
18.The noise had died down.喧闹声逐渐消失了。
相关短句/例句
large noise elimination quantity大消声量
3)sound attenuation消声
1.The ventilation and sound attenuation system are introduced to the standard building acoustic sound insulation lab to meet the requirement of sound power level measure of chair outlet′s airflow noise for China National Grand Theater.为测量国家大剧院座椅下送风风口气流噪声声功率级,对已有的标准建筑隔声实验室的接收室进行改造,引入通风系统,同时进行消声处理。
2.The noise reduction mechanism of porous asphalt pavement is analyzed from the mechanisms of porous sound absorption, as well as resonance sound attenuation and noise reduction.从多孔吸声和消声降噪两个角度解释多孔性沥青路面的降噪机理,提出采用室内实验与现场测试相结合的方法来评价多孔性路面的降噪性能,对于减少噪声污染具有积极的意义。
4)noise elimination消声
1.Research on the influence of complex on the noise elimination;关于复合结构对消声影响的研究
2.A new eguipment of noise elimination aeration and dust contrel;一种新型的消声通风除尘装置
3.The principle & the measurements of noise elimination &vibration isolation of the air condition mechanical room;空调机房消声隔振的机理与措施
5)noise abatement消声
1.Through researching the quality of noise abatement, resistance and uniform compression, etc, it indicates that static pressure tank's noise abatement characteristic relates with noise frequency, ratio of dilation and length of itself.基于静压箱是通风管网中一种特殊的连接件 通过对其消声、阻力、均压等性能进行研究表明 :静压箱的消声性能除与噪声的频率、静压箱的扩张比、静压箱的长度等参数有关以外 ,还和它与通风管道的连接方式关系密切 ;要增强静压箱的均压效果 ,在负压通风系统中 ,静压箱的长度大于静压箱断面积平方根的 1。
6)noise reduction消声
1.Then the directions of research & development are pointed out while the gas noise reduction technologys in commom use are summarized.在分析空调压缩机的噪声与声源的基础上 ,对流体声及其消声技术作了详细阐述 ,并提出进一步的研究方向。
2.Presents the design methods of air conditioning water system, air distribution of rendition hall,air exhaust system, noise reduction, vibration isolation and automatic control.分析了该音乐厅空调负荷的特点及其计算过程 ,介绍了空调水系统、演奏大厅气流组织、排风系统、空调系统消声和减振、空调自控的设计方法。
3.Through practical analysis and noise measurement on civilian building, analysis on the reason of noise occurred, three air conditioning regions are divided: air conditioner room,the front and terminal of air supply system, based on noise reduction manner.通过对民用建筑空调系统实例分析和噪声测定 ,分析噪声发生的原因 ,并根据消声的方式 ,将降噪工程分成三个区域 :空调机房、送风系统前段和末端 。
延伸阅读
成交量、未平仓合约量与价格的关系成交量、未平仓合约量与价格的关系 【成交且、未平仓合约，与价格的关系】成交量和未平仓合约量的变化会对期货价格产生影响，期货价格变化也会引起成交t和未平仓量的变化。因此，分析三者的变化，有利于正确预测期货价格走势。 1.成交t、未平仓合约里增加，价格上升，表示新买方正大t收购，近期内价格还可能继续上涨。 2.成交t、未平仓合约t减少，价格上升，表示卖空者大t补货平仓，价格短期内向上，但不久将可能回落。 3.成交t增加，价格上升，但未平仓合的t减少，说明卖空者和买空者都在大t平仓，价格马上*下映。 4.成交t、未平仓t增加，价格下肤，农明卖空者大t出咨合的，短期内价格还可能下跌，但如抛省过度，反可能使价格上升。 5.成交t、未平仓t减少，价格下肤，农明大t买空者急于卖货平仓，姐期内价格将峨续下降。 6.成交量增加、未平仓量和价格下跌，表明卖空者利用买空者卖货平仓导致价格下跌之际陆续补货平仓获利，价格可能转为回升。 从上分析可见，在一般情况下，如果成交量、未平仓量与价格同向小幅变化，则其价格趋势可继续维持一段时间;如两者与价格反向变化时，价格走势可能转向。当然，这还需结合不同的价格形态作进一步的具体分析。
