1) suction noise
吸气噪声<声>
2) sound absorption and noise reduction
吸声降噪
1.
The article presents the concept,process,strongpoint,performance and development & research status of ceramic foam abroad and at home,mainly describing the application of ceramic foam in wastewater treatment,exhaust gas treatment and sound absorption and noise reduction.
本文介绍了泡沫陶瓷的概念、制备方法、优点、性能以及目前国内外的研究发展状况,重点讲述了泡沫陶瓷在废水处理、废气处理、吸声降噪领域的应用,并对泡沫陶瓷在环境中的应用前景和发展趋势作了预测。
3) noise reduction
吸声降噪
1.
With the acoustic impedance pipe,the experiments for noise reduction characteristic of MR with different structural parameters were carried.
该吸声模型为金属橡胶在吸声降噪方面的工程应用提供了理论依据。
2.
It not only provides experiment method for the further engineering application of MR in the field of noise reduction,but also set up a basis for the theory improvement.
并与该理论模型的计算结果进行了对比分析,验证了该模型的准确性,进而为金属橡胶在吸声降噪方面的工程应用提供了试验方法,为进一步完善该理论奠定基础。
4) aerodynamic noise
气动噪声
1.
Prediction of interior aerodynamic noise of high-speed train cab;
高速列车司机室内气动噪声预测
2.
Numerical analysis of aerodynamic noise in a cross flow fan;
贯流风机气动噪声数值预估
3.
Numerical prediction of aerodynamic noise radiated from high speed train head surface;
高速列车车头曲面气动噪声的数值预测
5) Exhaust noise
排气噪声
1.
Testing research on muffler for filtering period interval exhaust noise;
周期间隙性排气噪声滤波消声器的试验研究
2.
According to the frequency chart performance of the exhaust noise,the new muffler of one 100 kW diesel genset is designed.
以某100 kW发电机组用柴油机在100%负荷时消声器进口处噪声的实测数据为条件,根据进口处排气噪声的频谱特性,对该柴油机的消声器进行了重新设计,并通过三维声场计算的方法对其在125~4000 Hz倍频程及315 Hz共七个频率进行计算。
3.
According to the exhaust noise characteristics of special engine and the installation request of exhaust muffler, the exhaust muffler for special engine was designed.
根据特种发动机排气噪声的特性和消声器的安装要求,设计了一个组合式排气消声器。
6) aeroacoustic noise
气动噪声
1.
The aeroacoustic noise derived from the pressure fluctuation of blades and volute throat is predicted by the FW-H equation based on the Lighthill noise analogy.
基于N-S方程和雷诺输运应力方程(RSM),对空调用贯流风机进行了非稳态内流计算,并应用基于L ighth ill声学类比理论的FW-H方程时域解法,预测了由叶轮表面压力波动和蜗舌表面压力波动所产生的远场气动噪声,同时还比较了不同蜗舌间隙对气动噪声的影响。
2.
Chaos characteristics of the aerodynamic noise are discussed and the aeroacoustic noise signals on helicopter scissors tail rotor is analyzed by the chaos theory.
研究剪刀式尾桨气动噪声的混沌特性,并应用混沌理论进行了直升机尾桨气动噪声信号分析。
3.
Research of helicopter rotor aeroacoustic noise based on CFD technics
应用CFD技术和气动声学的时域理论,研究直升机旋翼悬停流场及气动噪声。
补充资料：鸡啼样吸气声
鸡啼样吸气声
minute gun cough
见于百日咳的痉咳期。成串的、连续不断的十几声以至数十声咳嗽后，由于肺脏换气的迫切需要，不得不作一次长吸气，较大量的空气急速通过痉挛的声门时，所发出的高调的吸气声。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条